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Shivkumar Kalyanam

Title(s)Director, UCLA Cardiac Arrhythmia Center
Phone(310) 206-2235
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    Other Positions
    Title(s)Professor, Medicine

    Title(s)Professor, Radiology


    Collapse Research 
    Collapse Research Activities and Funding
    CARDIAC NEUROMODULATION IN HUMANS: MECHANISMS & THERAPIES
    NIH OT2OD028201Jul 23, 2019 - Jun 30, 2022
    Role: Principal Investigator
    Spinal Neuraxial Modulatin of Ventricular Excitability - Mechanisms and Therapeutics
    NIH/NHLBI R01HL136836Aug 1, 2018 - Jul 31, 2022
    Role: Co-Principal Investigator
    Bioelectric monitoring and control of the heart
    NIH/NIBIB U01EB025138Sep 26, 2017 - Jun 30, 2021
    Role: Co-Principal Investigator
    Comprehensive Structural and Functional Mapping of the Mammalian Cardiac Nervous System
    NIH OT2OD023848Sep 24, 2016 - Jun 30, 2020
    Role: Principal Investigator
    Distributed electrode system for high-fidelity cardio-neural mapping
    NIH/NIBIB U18EB021799Sep 30, 2015 - Jul 31, 2018
    Role: Co-Principal Investigator
    Percutaneous cardiac HIFU ablation with multimodal image guidance
    NIH/NHLBI R01HL117740Sep 1, 2013 - Jun 30, 2017
    Role: Co-Principal Investigator
    ELECTROPHYSIOLOGICAL EFFECTS OF NEURAL REMODELING OF THE VENTRICLES
    NIH/NHLBI R01HL084261May 15, 2006 - Dec 31, 2016
    Role: Principal Investigator

    Collapse Bibliographic 
    Collapse Publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help.
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    1. Ardell JL, Foreman RD, Armour JA, Shivkumar K. Cardiac sympathectomy and spinal cord stimulation attenuate reflex-mediated norepinephrine release during ischemia preventing ventricular fibrillation. JCI Insight. 2019 Oct 31. PMID: 31671074.
      View in: PubMed
    2. Bradfield JS, Hayase J, Liu K, Moriarty J, Kee ST, Do D, Ajijola OA, Vaseghi M, Gima J, Sorg J, Cote S, Pavez G, Buch E, Khakpour H, Krokhaleva Y, Macias C, Fujimura O, Boyle NG, Shivkumar K. RENAL DENERVATION AS AN ADJUNCTIVE THERAPY TO CARDIAC SYMPATHETIC DENERVATION FOR ABLATION REFRACTORY VENTRICULAR TACHYCARDIA. Heart Rhythm. 2019 Sep 17. PMID: 31539629.
      View in: PubMed
    3. Zhu C, Hanna P, Rajendran PS, Shivkumar K. Neuromodulation for Ventricular Tachycardia and Atrial Fibrillation: A Clinical Scenario-Based Review. JACC Clin Electrophysiol. 2019 Aug; 5(8):881-896. PMID: 31439288.
      View in: PubMed
    4. Diamantakos E, Harvey R, Shivkumar K, Bradfield JS. Structural Interventions and Potential Unforeseen Limits on Access to Ventricular Tachycardia Substrates. JACC Clin Electrophysiol. 2019 Aug; 5(8):996-997. PMID: 31439305.
      View in: PubMed
    5. Challis RC, Kumar SR, Chan KY, Challis C, Beadle K, Jang MJ, Kim HM, Rajendran PS, Tompkins JD, Shivkumar K, Deverman BE, Gradinaru V. Publisher Correction: Systemic AAV vectors for widespread and targeted gene delivery in rodents. Nat Protoc. 2019 Aug; 14(8):2597. PMID: 31312046.
      View in: PubMed
    6. Shenthar J, Singh B, Banavalikar B, Chakali SS, Delhaas T, Shivkumar K, Bradfield JS. Cardiac perforation complicating cardiac electrophysiology procedures: value of angiography and use of a closure device to avoid cardiac surgery. J Interv Card Electrophysiol. 2019 Jun 28. PMID: 31250253.
      View in: PubMed
    7. Shah R, Assis F, Alugubelli N, Okada DR, Cardoso R, Shivkumar K, Tandri H. Cardiac sympathetic denervation for refractory ventricular arrhythmias in patients with structural heart disease: A systematic review. Heart Rhythm. 2019 Oct; 16(10):1499-1505. PMID: 31252084.
      View in: PubMed
    8. Koene RJ, Buch E, Seo YJ, Li JM, Mbai M, Chandrashekhar Y, Shivkumar K, Tholakanahalli VN. Increased baseline ECG R-R dispersion predicts improvement in systolic function after atrial fibrillation ablation. Open Heart. 2019; 6(1):e000958. PMID: 31328002.
      View in: PubMed
    9. Scherschel K, Hedenus K, Jungen C, Lemoine MD, Rübsamen N, Veldkamp MW, Klatt N, Lindner D, Westermann D, Casini S, Kuklik P, Eickholt C, Klöcker N, Shivkumar K, Christ T, Zeller T, Willems S, Meyer C. Cardiac glial cells release neurotrophic S100B upon catheter-based treatment of atrial fibrillation. Sci Transl Med. 2019 May 22; 11(493). PMID: 31118294.
      View in: PubMed
    10. Hanna P, Zhu C, Rajendran PS, Shivkumar K. Anesthetizing the Fibrillating Heart. J Am Heart Assoc. 2019 May 21; 8(10):e012713. PMID: 31068060.
      View in: PubMed
    11. Hsu JJ, Nsair A, Aboulhosn JA, Horwich TB, Dave RH, Shannon KM, Boyle NG, Shivkumar K, Bradfield JS. Monomorphic Ventricular Arrhythmias in Athletes. Arrhythm Electrophysiol Rev. 2019 05; 8(2):83-89. PMID: 31114681.
      View in: PubMed
    12. Rajendran PS, Challis RC, Fowlkes CC, Hanna P, Tompkins JD, Jordan MC, Hiyari S, Gabris-Weber BA, Greenbaum A, Chan KY, Deverman BE, Münzberg H, Ardell JL, Salama G, Gradinaru V, Shivkumar K. Identification of peripheral neural circuits that regulate heart rate using optogenetic and viral vector strategies. Nat Commun. 2019 04 26; 10(1):1944. PMID: 31028266.
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    13. Shivkumar K. Catheter Ablation of Ventricular Arrhythmias. N Engl J Med. 2019 04 18; 380(16):1555-1564. PMID: 30995375.
      View in: PubMed
    14. Hamon D, Swid MA, Rajendran PS, Liu A, Boyle NG, Shivkumar K, Bradfield JS. Premature ventricular contraction diurnal profiles predict distinct clinical characteristics and beta-blocker responses. J Cardiovasc Electrophysiol. 2019 Jun; 30(6):836-843. PMID: 30964570.
      View in: PubMed
    15. Rajendran PS, Hanna P, Zhu C, Shivkumar K. Neuroinflammation as a mechanism for cardiovascular diseases. Int J Cardiol. 2019 Aug 01; 288:128-129. PMID: 30979606.
      View in: PubMed
    16. Goldberger JJ, Arora R, Buckley U, Shivkumar K. Autonomic Nervous System Dysfunction: JACC Focus Seminar. J Am Coll Cardiol. 2019 Mar 19; 73(10):1189-1206. PMID: 30871703.
      View in: PubMed
    17. Jiang R, Buch E, Gima J, Upadhyay GA, Nayak HM, Beaser AD, Aziz Z, Shivkumar K, Tung R. Feasibility of percutaneous epicardial mapping and ablation for refractory atrial fibrillation: Insights into substrate and lesion transmurality. Heart Rhythm. 2019 Aug; 16(8):1151-1159. PMID: 30776449.
      View in: PubMed
    18. Al-Hadithi ABAK, Khakpour H, Cruz D, Boyle NG, Shivkumar K, Bradfield JS. Reply to the Editor- Bipolar ablation of refractory VT circuits: Current opportunities and limitations. HeartRhythm Case Rep. 2019 May; 5(5):288-289. PMID: 31193245.
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    19. Challis RC, Ravindra Kumar S, Chan KY, Challis C, Beadle K, Jang MJ, Kim HM, Rajendran PS, Tompkins JD, Shivkumar K, Deverman BE, Gradinaru V. Systemic AAV vectors for widespread and targeted gene delivery in rodents. Nat Protoc. 2019 02; 14(2):379-414. PMID: 30626963.
      View in: PubMed
    20. Bradfield JS, Fujimura O, Boyle NG, Shivkumar K. Catheter ablation in the vicinity of the proximal conduction system: Your eyes cannot see what your mind does not know. Heart Rhythm. 2019 Mar; 16(3):378-379. PMID: 30630100.
      View in: PubMed
    21. Ellenbogen KA, Tung R, Shivkumar K, Miller JM. Journal of Cardiovascular Electrophysiology: Redefining Our Mission. J Cardiovasc Electrophysiol. 2019 Jan; 30(1):5-6. PMID: 30556193.
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    22. Vergara P, Tzou WS, Tung R, Brombin C, Nonis A, Vaseghi M, Frankel DS, Di Biase L, Tedrow U, Mathuria N, Nakahara S, Tholakanahalli V, Bunch TJ, Weiss JP, Dickfeld T, Lakireddy D, Burkhardt JD, Santangeli P, Callans D, Natale A, Marchlinski F, Stevenson WG, Shivkumar K, Sauer WH, Della Bella P. Predictive Score for Identifying Survival and Recurrence Risk Profiles in Patients Undergoing Ventricular Tachycardia Ablation. Circ Arrhythm Electrophysiol. 2018 12; 11(12):e006730. PMID: 30562104.
      View in: PubMed
    23. Hanna P, Rajendran PS, Shivkumar K. Neural ablation to treat ventricular arrhythmias. Europace. 2018 12 01; 20(12):1880-1881. PMID: 29931207.
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    24. Geraghty L, Santangeli P, Tedrow UB, Shivkumar K, Kumar S. Contemporary Management of Electrical Storm. Heart Lung Circ. 2019 Jan; 28(1):123-133. PMID: 30554598.
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    25. Chadda KR, Ajijola OA, Vaseghi M, Shivkumar K, Huang CL, Jeevaratnam K. Ageing, the autonomic nervous system and arrhythmia: From brain to heart. Ageing Res Rev. 2018 Dec; 48:40-50. PMID: 30300712.
      View in: PubMed
    26. Al-Hadithi ABAK, Khakpour H, Cruz D, Boyle NG, Shivkumar K, Bradfield JS. Incessant intraseptal ventricular tachycardia ablated utilizing extracorporeal membrane oxygenation and bipolar ablation. HeartRhythm Case Rep. 2018 Dec; 4(12):557-560. PMID: 30581730.
      View in: PubMed
    27. Hanna P, Shivkumar K. Targeting the Cardiac Ganglionated Plexi for Atrial Fibrillation: Modulate or Destroy? JACC Clin Electrophysiol. 2018 10; 4(10):1359-1361. PMID: 30336882.
      View in: PubMed
    28. Turagam MK, Atoui M, Atkins D, Di Biase L, Shivkumar K, Jared Bunch T, Mohanty S, Gianni C, Natale A, Lakkireddy D. Persistent left superior vena cava as an arrhythmogenic source in atrial fibrillation: results from a multicenter experience. J Interv Card Electrophysiol. 2019 Mar; 54(2):93-100. PMID: 30259306.
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    29. Saddic LA, Howard-Quijano K, Kipke J, Kubo Y, Dale EA, Hoover D, Shivkumar K, Eghbali M, Mahajan A. Progression of myocardial ischemia leads to unique changes in immediate-early gene expression in the spinal cord dorsal horn. Am J Physiol Heart Circ Physiol. 2018 12 01; 315(6):H1592-H1601. PMID: 30216122.
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    30. Kung GL, Vaseghi M, Gahm JK, Shevtsov J, Garfinkel A, Shivkumar K, Ennis DB. Microstructural Infarct Border Zone Remodeling in the Post-infarct Swine Heart Measured by Diffusion Tensor MRI. Front Physiol. 2018; 9:826. PMID: 30246802.
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    31. Shivkumar K, Hanna P. Percutaneous Hemodynamic Assist Devices: Unloading the Left Atrium to Prevent Atrial Remodeling. J Am Coll Cardiol. 2018 08 14; 72(7):751-753. PMID: 30092951.
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    32. Hanna P, Shivkumar K, Ardell JL. Calming the Nervous Heart: Autonomic Therapies in Heart Failure. Card Fail Rev. 2018 Aug; 4(2):92-98. PMID: 30206483.
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    33. Vaseghi M, Hu TY, Tung R, Vergara P, Frankel DS, Di Biase L, Tedrow UB, Gornbein JA, Yu R, Mathuria N, Nakahara S, Tzou WS, Sauer WH, Burkhardt JD, Tholakanahalli VN, Dickfeld TM, Weiss JP, Bunch TJ, Reddy M, Callans DJ, Lakkireddy DR, Natale A, Marchlinski FE, Stevenson WG, Della Bella P, Shivkumar K. Outcomes of Catheter Ablation of Ventricular Tachycardia Based on Etiology in Nonischemic Heart Disease: An International Ventricular Tachycardia Ablation Center Collaborative Study. JACC Clin Electrophysiol. 2018 09; 4(9):1141-1150. PMID: 30236386.
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    34. Moore JP, Shannon KM, Gallotti RG, McLeod CJ, Chiriac A, Walsh EP, Sreeram N, Patel AR, De Groot NM, von Alvensleben J, Balaji S, Frankel DS, Miyake CY, Perry JC, Shivkumar K. Catheter Ablation of Ventricular Arrhythmia for Ebstein's Anomaly in Unoperated and Post-Surgical Patients. JACC Clin Electrophysiol. 2018 10; 4(10):1300-1307. PMID: 30336876.
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    35. Romero J, Diaz JC, Hayase J, Dave RH, Bradfield JS, Shivkumar K. Intramyocardial radiofrequency ablation of ventricular arrhythmias using intracoronary wire mapping and a coronary reentry system: Description of a novel technique. HeartRhythm Case Rep. 2018 Jul; 4(7):285-292. PMID: 30023273.
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    36. Bardsley EN, Davis H, Ajijola OA, Buckler KJ, Ardell JL, Shivkumar K, Paterson DJ. RNA Sequencing Reveals Novel Transcripts from Sympathetic Stellate Ganglia During Cardiac Sympathetic Hyperactivity. Sci Rep. 2018 06 05; 8(1):8633. PMID: 29872217.
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    37. Liu K, Li D, Hao G, McCaffary D, Neely O, Woodward L, Ioannides D, Lu CJ, Brescia M, Zaccolo M, Tandri H, Ajijola OA, Ardell JL, Shivkumar K, Paterson DJ. Phosphodiesterase 2A as a therapeutic target to restore cardiac neurotransmission during sympathetic hyperactivity. JCI Insight. 2018 05 03; 3(9). PMID: 29720569.
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    38. Li A, Zuberi Z, Bradfield JS, Zarif JK, Ward DE, Anderson RH, Shivkumar K, Saba MM. Endocardial ablation of ventricular ectopic beats arising from the basal inferoseptal process of the left ventricle. Heart Rhythm. 2018 09; 15(9):1356-1362. PMID: 29709577.
      View in: PubMed
    39. Macias C, Khakpour H, Buch E, Shivkumar K, Bradfield JS. Limitations of 12-lead electrocardiogram wide complex tachycardia algorithms in a patient with left atrial flutter and large myocardial infarction. HeartRhythm Case Rep. 2019 Feb; 5(2):70-73. PMID: 30820399.
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    40. Wadia SK, Lluri G, Aboulhosn JA, Shivkumar K, Reemtsen BL, Laks H, Biniwale RM, Levi DS, Salem M, Moore JP. Ventricular arrhythmia burden after transcatheter versus surgical pulmonary valve replacement. Heart. 2018 11; 104(21):1791-1796. PMID: 29636402.
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    41. Meng L, Shivkumar K, Ajijola O. Autonomic Regulation and Ventricular Arrhythmias. Curr Treat Options Cardiovasc Med. 2018 Apr 07; 20(5):38. PMID: 29627871.
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    42. Kwon OJ, Pendekanti S, Fox JN, Yanagawa J, Fishbein MC, Shivkumar K, Lambert HW, Ajijola OA. Morphological Spectra of Adult Human Stellate Ganglia: Implications for Thoracic Sympathetic Denervation. Anat Rec (Hoboken). 2018 Feb 16; 301(7):1244-1250. PMID: 29451372.
      View in: PubMed
    43. Bradfield JS, Ajijola OA, Vaseghi M, Shivkumar K. Mechanisms and management of refractory ventricular arrhythmias in the age of autonomic modulation. Heart Rhythm. 2018 08; 15(8):1252-1260. PMID: 29454137.
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    44. Yoshie K, Rajendran PS, Massoud L, Kwon O, Tadimeti V, Salavatian S, Ardell JL, Shivkumar K, Ajijola OA. Cardiac vanilloid receptor-1 afferent depletion enhances stellate ganglion neuronal activity and efferent sympathetic response to cardiac stress. Am J Physiol Heart Circ Physiol. 2018 05 01; 314(5):H954-H966. PMID: 29351450.
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    45. Do DH, Shivkumar K. Programmable Hypertension Control: Another Possible Indication for Implanted Pacemakers. J Am Heart Assoc. 2017 12 23; 6(12). PMID: 29275376.
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    46. Vakil K, Garcia S, Tung R, Vaseghi M, Tedrow U, Della Bella P, Frankel DS, Vergara P, Di Biase L, Nagashima K, Nakahara S, Tzou WS, Burkhardt JD, Dickfeld T, Weiss JP, Bunch J, Callans D, Lakkireddy D, Natale A, Sauer WH, Stevenson WG, Marchlinski F, Shivkumar K, Tholakanahalli VN. Ventricular Tachycardia Ablation in the Elderly: An International Ventricular Tachycardia Center Collaborative Group Analysis. Circ Arrhythm Electrophysiol. 2017 Dec; 10(12). PMID: 29254946.
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    47. Hayase J, Khakpour H, Shivkumar K, Bradfield JS. Right ventricular lead proarrhythmia: A novel intervention for an under-recognized phenomenon. HeartRhythm Case Rep. 2018 Feb; 4(2):50-53. PMID: 29876287.
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    48. Turagam MK, Vuddanda V, Atkins D, Santangeli P, Frankel DS, Tung R, Vaseghi M, Sauer WH, Tzou W, Mathuria N, Nakahara S, Dickfeld TM, Bunch TJ, Weiss P, Di Biase L, Tholakanahalli V, Vakil K, Tedrow UB, Stevenson WG, Della Bella P, Shivkumar K, Marchlinski FE, Callans DJ, Natale A, Reddy M, Lakkireddy D. Hemodynamic Support in Ventricular Tachycardia Ablation: An International VT Ablation Center Collaborative Group Study. JACC Clin Electrophysiol. 2017 12 26; 3(13):1534-1543. PMID: 29759835.
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    49. Li A, Hayase J, Do D, Buch E, Vaseghi M, Ajijola OA, Macias C, Krokhaleva Y, Khakpour H, Boyle NG, Benharash P, Biniwale R, Shivkumar K, Bradfield JS. Hybrid surgical vs percutaneous access epicardial ventricular tachycardia ablation. Heart Rhythm. 2018 04; 15(4):512-519. PMID: 29132931.
      View in: PubMed
    50. Krishnan B, Sankar A, Anand I, Adabag S, Li JM, McFalls EO, Benditt DG, Shivkumar K, Tholakanahalli VN. Post-Extrasystolic Potentiation as a Predictor of Recovery of Left Ventricular Dysfunction After Radiofrequency Catheter Ablation. JACC Clin Electrophysiol. 2017 11; 3(11):1283-1291. PMID: 29759625.
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    51. Khakpour H, Shemin RJ, Lee JM, Buch E, Boyle NG, Shivkumar K, Bradfield JS. Atrioesophageal Fistula After Atrial Fibrillation Ablation: A single center series. J Atr Fibrillation. 2017 Oct-Nov; 10(3):1654. PMID: 29250244.
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    52. Do DH, Bradfield J, Ajijola OA, Vaseghi M, Le J, Rahman S, Mahajan A, Nogami A, Boyle NG, Shivkumar K. Thoracic Epidural Anesthesia Can Be Effective for the Short-Term Management of Ventricular Tachycardia Storm. J Am Heart Assoc. 2017 Oct 27; 6(11). PMID: 29079570.
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    53. Do DH, Eyvazian V, Bayoneta AJ, Hu P, Finn JP, Bradfield JS, Shivkumar K, Boyle NG. Cardiac magnetic resonance imaging using wideband sequences in patients with nonconditional cardiac implanted electronic devices. Heart Rhythm. 2018 02; 15(2):218-225. PMID: 29017930.
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    54. Ajijola OA, Hoover DB, Simerly TM, Brown TC, Yanagawa J, Biniwale RM, Lee JM, Sadeghi A, Khanlou N, Ardell JL, Shivkumar K. Inflammation, oxidative stress, and glial cell activation characterize stellate ganglia from humans with electrical storm. JCI Insight. 2017 09 21; 2(18). PMID: 28931760.
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    55. Shivkumar K, Ardell JL. Vagal Neuromodulation for Atrial Arrhythmias. JACC Clin Electrophysiol. 2017 09; 3(9):939-941. PMID: 29759718.
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    56. Li A, Buch E, Boyle NG, Shivkumar K, Bradfield JS. Incidence and significance of adhesions encountered during epicardial mapping and ablation of ventricular tachycardia in patients with no history of prior cardiac surgery or pericarditis. Heart Rhythm. 2018 01; 15(1):65-74. PMID: 28917555.
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    57. Meng L, Tseng CH, Shivkumar K, Ajijola O. Efficacy of Stellate Ganglion Blockade in Managing Electrical Storm: A Systematic Review. JACC Clin Electrophysiol. 2017 09; 3(9):942-949. PMID: 29270467.
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    58. Vergara P, Tung R, Vaseghi M, Brombin C, Frankel DS, Di Biase L, Nagashima K, Tedrow U, Tzou WS, Sauer WH, Mathuria N, Nakahara S, Vakil K, Tholakanahalli V, Bunch TJ, Weiss JP, Dickfeld T, Vunnam R, Lakireddy D, Burkhardt JD, Correra A, Santangeli P, Callans D, Natale A, Marchlinski F, Stevenson WG, Shivkumar K, Della Bella P. Successful ventricular tachycardia ablation in patients with electrical storm reduces recurrences and improves survival. Heart Rhythm. 2018 01; 15(1):48-55. PMID: 28843418.
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    59. Vaseghi M, Salavatian S, Rajendran PS, Yagishita D, Woodward WR, Hamon D, Yamakawa K, Irie T, Habecker BA, Shivkumar K. Parasympathetic dysfunction and antiarrhythmic effect of vagal nerve stimulation following myocardial infarction. JCI Insight. 2017 Aug 17; 2(16). PMID: 28814663.
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    60. Mathuria N, Bachani N, Mandapati R, Shivkumar K, Lokhandwala Y. Coronary sinus ostium in the lateral right atrium: Implications for the electrophysiologist. HeartRhythm Case Rep. 2017 Oct; 3(10):487-489. PMID: 29062704.
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    61. Hanna P, Rajendran PS, Ajijola OA, Vaseghi M, Andrew Armour J, Ardell JL, Shivkumar K. Cardiac neuroanatomy - Imaging nerves to define functional control. Auton Neurosci. 2017 Nov; 207:48-58. PMID: 28802636.
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    62. Hamon D, Abehsira G, Gu K, Liu A, Blaye-Felice Sadron M, Billet S, Kambur T, Swid MA, Boyle NG, Dandamudi G, Maury P, Chen M, Miller JM, Lellouche N, Shivkumar K, Bradfield JS. Circadian variability patterns predict and guide premature ventricular contraction ablation procedural inducibility and outcomes. Heart Rhythm. 2018 01; 15(1):99-106. PMID: 28765087.
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    63. Kember G, Ardell JL, Shivkumar K, Armour JA. Recurrent myocardial infarction: Mechanisms of free-floating adaptation and autonomic derangement in networked cardiac neural control. PLoS One. 2017; 12(7):e0180194. PMID: 28692680.
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    64. Vaseghi M, Barwad P, Malavassi Corrales FJ, Tandri H, Mathuria N, Shah R, Sorg JM, Gima J, Mandal K, Sàenz Morales LC, Lokhandwala Y, Shivkumar K. Cardiac Sympathetic Denervation for Refractory Ventricular Arrhythmias. J Am Coll Cardiol. 2017 Jun 27; 69(25):3070-3080. PMID: 28641796.
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    65. Shapiro H, Meymandi S, Shivkumar K, Bradfield JS. Cardiac inflammation and ventricular tachycardia in Chagas disease. HeartRhythm Case Rep. 2017 Aug; 3(8):392-395. PMID: 28840107.
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    66. Li A, Tung R, Shivkumar K, Bradfield JS. Brugada syndrome-Malignant phenotype associated with acute cardiac inflammation? HeartRhythm Case Rep. 2017 Aug; 3(8):384-388. PMID: 28840105.
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    67. Chui RW, Buckley U, Rajendran PS, Vrabec T, Shivkumar K, Ardell JL. Bioelectronic block of paravertebral sympathetic nerves mitigates post-myocardial infarction ventricular arrhythmias. Heart Rhythm. 2017 11; 14(11):1665-1672. PMID: 28629852.
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    68. Howard-Quijano K, Takamiya T, Dale EA, Kipke J, Kubo Y, Grogan T, Afyouni A, Shivkumar K, Mahajan A. Spinal cord stimulation reduces ventricular arrhythmias during acute ischemia by attenuation of regional myocardial excitability. Am J Physiol Heart Circ Physiol. 2017 Aug 01; 313(2):H421-H431. PMID: 28576833.
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    69. Romero J, Ajijola O, Shivkumar K, Tung R. Characterization of Aortic Valve Closure Artifact During Outflow Tract Mapping: Correlation With Hemodynamics and Mechanical Valves. Circ Arrhythm Electrophysiol. 2017 Jun; 10(6). PMID: 28630170.
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    70. Balaji S, Mandapati R, Shivkumar K. Cardiac Arrhythmias in Adults with Congenital Heart Disease. Card Electrophysiol Clin. 2017 06; 9(2):xv-xvi. PMID: 28457248.
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    71. Gao C, Howard-Quijano K, Rau C, Takamiya T, Song Y, Shivkumar K, Wang Y, Mahajan A. Inflammatory and apoptotic remodeling in autonomic nervous system following myocardial infarction. PLoS One. 2017; 12(5):e0177750. PMID: 28542617.
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    72. Tzou WS, Tung R, Frankel DS, Di Biase L, Santangeli P, Vaseghi M, Bunch TJ, Weiss JP, Tholakanahalli VN, Lakkireddy D, Vunnam R, Dickfeld T, Mathuria N, Tedrow U, Vergara P, Vakil K, Nakahara S, Burkhardt JD, Stevenson WG, Callans DJ, Della Bella P, Natale A, Shivkumar K, Marchlinski FE, Sauer WH. Outcomes after repeat ablation of ventricular tachycardia in structural heart disease: An analysis from the International VT Ablation Center Collaborative Group. Heart Rhythm. 2017 07; 14(7):991-997. PMID: 28506710.
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    73. Santangeli P, Frankel DS, Tung R, Vaseghi M, Sauer WH, Tzou WS, Mathuria N, Nakahara S, Dickfeldt TM, Lakkireddy D, Bunch TJ, Di Biase L, Natale A, Tholakanahalli V, Tedrow UB, Kumar S, Stevenson WG, Della Bella P, Shivkumar K, Marchlinski FE, Callans DJ. Early Mortality After Catheter Ablation of Ventricular Tachycardia in Patients With Structural Heart Disease. J Am Coll Cardiol. 2017 May 02; 69(17):2105-2115. PMID: 28449770.
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    74. Buch E, Shivkumar K. Could less be more in catheter ablation for persistent atrial fibrillation? Pulmonary vein isolation reconsidered. Heart Rhythm. 2017 05; 14(5):668-669. PMID: 28434447.
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    75. Ardell JL, Shivkumar K. Sympathetic neural recording-It is all in the details. Heart Rhythm. 2017 07; 14(7):972-973. PMID: 28438720.
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    76. Bradfield JS, Shivkumar K. Pattern Breaks on the Surface ECG: Can We Anticipate a Long Day Ahead? J Cardiovasc Electrophysiol. 2017 05; 28(5):515-516. PMID: 28257570.
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    77. Ajijola OA, Upadhyay GA, Macias C, Shivkumar K, Tung R. Permanent His-bundle pacing for cardiac resynchronization therapy: Initial feasibility study in lieu of left ventricular lead. Heart Rhythm. 2017 09; 14(9):1353-1361. PMID: 28400315.
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    78. Hamon D, Rajendran PS, Chui RW, Ajijola OA, Irie T, Talebi R, Salavatian S, Vaseghi M, Bradfield JS, Armour JA, Ardell JL, Shivkumar K. Premature Ventricular Contraction Coupling Interval Variability Destabilizes Cardiac Neuronal and Electrophysiological Control: Insights From Simultaneous Cardioneural Mapping. Circ Arrhythm Electrophysiol. 2017 Apr; 10(4). PMID: 28408652.
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    79. Weiss JN, Qu Z, Shivkumar K. Electrophysiology of Hypokalemia and Hyperkalemia. Circ Arrhythm Electrophysiol. 2017 03; 10(3). PMID: 28314851.
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    80. Zhang F, Hamon D, Fang Z, Xu Y, Yang B, Ju W, Bradfield J, Shivkumar K, Chen M, Tung R. Value of a Posterior Electrocardiographic Lead for Localization of Ventricular Outflow Tract Arrhythmias: The V4/V8 Ratio. JACC Clin Electrophysiol. 2017 07; 3(7):678-686. PMID: 29759536.
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    81. Guerra F, Bonelli P, Flori M, Cipolletta L, Carbucicchio C, Izquierdo M, Kozluk E, Shivkumar K, Vaseghi M, Patani F, Cupido C, Pala S, Ruiz-Granell R, Ferrero A, Tondo C, Capucci A. Temporal Trends and Temperature-Related Incidence of Electrical Storm: The TEMPEST Study (Temperature-Related Incidence of Electrical Storm). Circ Arrhythm Electrophysiol. 2017 Mar; 10(3). PMID: 28314850.
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    82. Buckley U, Chui RW, Rajendran PS, Vrabec T, Shivkumar K, Ardell JL. Bioelectronic neuromodulation of the paravertebral cardiac efferent sympathetic outflow and its effect on ventricular electrical indices. Heart Rhythm. 2017 07; 14(7):1063-1070. PMID: 28219848.
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    83. Ajijola OA, Lux RL, Khahera A, Kwon O, Aliotta E, Ennis DB, Fishbein MC, Ardell JL, Shivkumar K. Sympathetic modulation of electrical activation in normal and infarcted myocardium: implications for arrhythmogenesis. Am J Physiol Heart Circ Physiol. 2017 Mar 01; 312(3):H608-H621. PMID: 28087519.
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    84. Buckley U, Rajendran PS, Shivkumar K. Ganglionated plexus ablation for atrial fibrillation: Just because we can, does that mean we should? Heart Rhythm. 2017 01; 14(1):133-134. PMID: 28007095.
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    85. Tzou WS, Tung R, Frankel DS, Vaseghi M, Bunch TJ, Di Biase L, Tholakanahalli VN, Lakkireddy D, Dickfeld T, Saliaris A, Weiss JP, Mathuria N, Tedrow U, Afzal MR, Vergara P, Nagashima K, Patel M, Nakahara S, Vakil K, Burkhardt JD, Tseng CH, Natale A, Shivkumar K, Callans DJ, Stevenson WG, Della Bella P, Marchlinski FE, Sauer WH. Ventricular Tachycardia Ablation in Severe Heart Failure: An International Ventricular Tachycardia Ablation Center Collaboration Analysis. Circ Arrhythm Electrophysiol. 2017 01; 10(1). PMID: 28082527.
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    86. Bradfield JS, Shivkumar K. Anatomy for Ventricular Tachycardia Ablation in Structural Heart Disease. Card Electrophysiol Clin. 2017 03; 9(1):11-24. PMID: 28167079.
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    87. Irie T, Yamakawa K, Hamon D, Nakamura K, Shivkumar K, Vaseghi M. Cardiac sympathetic innervation via middle cervical and stellate ganglia and antiarrhythmic mechanism of bilateral stellectomy. Am J Physiol Heart Circ Physiol. 2017 Mar 01; 312(3):H392-H405. PMID: 28011590.
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    88. Siontis KC, Kim HM, Stevenson WG, Fujii A, Bella PD, Vergara P, Shivkumar K, Tung R, Do DH, Daoud EG, Okabe T, Zeppenfeld K, Riva Silva M, Hindricks G, Arya A, Weber A, Kuck KH, Metzner A, Mathew S, Riedl J, Yokokawa M, Jongnarangsin K, Latchamsetty R, Morady F, Bogun FM. Prognostic Impact of the Timing of Recurrence of Infarct-Related Ventricular Tachycardia After Catheter Ablation. Circ Arrhythm Electrophysiol. 2016 12; 9(12). PMID: 27923805.
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    89. Frankel DS, Tung R, Santangeli P, Tzou WS, Vaseghi M, Di Biase L, Nagashima K, Tedrow U, Bunch TJ, Tholakanahalli VN, Dendi R, Reddy M, Lakkireddy D, Dickfeld T, Weiss JP, Mathuria N, Vergara P, Patel M, Nakahara S, Vakil K, Sauer WH, Callans DJ, Natale A, Stevenson WG, Della Bella P, Shivkumar K, Marchlinski FE. Sex and Catheter Ablation for Ventricular Tachycardia: An International Ventricular Tachycardia Ablation Center Collaborative Group Study. JAMA Cardiol. 2016 11 01; 1(8):938-944. PMID: 27556589.
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    90. Ajijola OA, Shivkumar K, Habecker BA. Natriuretic peptides and peripheral autonomic neurotransmission: back to the A, B, and C's. Cardiovasc Res. 2016 12; 112(3):619-621. PMID: 27979809.
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    91. Salavatian S, Beaumont E, Longpré JP, Armour JA, Vinet A, Jacquemet V, Shivkumar K, Ardell JL. Vagal stimulation targets select populations of intrinsic cardiac neurons to control neurally induced atrial fibrillation. Am J Physiol Heart Circ Physiol. 2016 11 01; 311(5):H1311-H1320. PMID: 27591222.
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    92. Tung R, Josephson ME, Bradfield JS, Shivkumar K. Directional Influences of Ventricular Activation on Myocardial Scar Characterization: Voltage Mapping With Multiple Wavefronts During Ventricular Tachycardia Ablation. Circ Arrhythm Electrophysiol. 2016 08; 9(8). PMID: 27516464.
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    93. Zhang P, Tung R, Zhang Z, Sheng X, Liu Q, Jiang R, Sun Y, Chen S, Yu L, Ye Y, Fu G, Shivkumar K, Jiang C. Characterization of the epicardial substrate for catheter ablation of Brugada syndrome. Heart Rhythm. 2016 11; 13(11):2151-2158. PMID: 27453126.
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    94. Shivkumar K, Ardell JL. Cardiac autonomic control in health and disease. J Physiol. 2016 07 15; 594(14):3851-2. PMID: 27417670.
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    95. Macias C, Shivkumar K, Tung R. Novel approach to intraprocedural cardiac tamponade: Dual-site drainage with continuous suction. Heart Rhythm. 2016 10; 13(10):2091-4. PMID: 27424076.
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    96. Tung R, Kim S, Yagishita D, Vaseghi M, Ennis DB, Ouadah S, Ajijola OA, Bradfield JS, Mahapatra S, Finn P, Shivkumar K. Scar voltage threshold determination using ex vivo magnetic resonance imaging integration in a porcine infarct model: Influence of interelectrode distances and three-dimensional spatial effects of scar. Heart Rhythm. 2016 10; 13(10):1993-2002. PMID: 27392944.
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    97. Shivkumar K. MY APPROACH to selecting patients for videoscopic cardiac sympathetic denervation (CSD)?. Trends Cardiovasc Med. 2016 11; 26(8):735-736. PMID: 27553819.
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    98. Shivkumar K, Ajijola OA, Anand I, Armour JA, Chen PS, Esler M, De Ferrari GM, Fishbein MC, Goldberger JJ, Harper RM, Joyner MJ, Khalsa SS, Kumar R, Lane R, Mahajan A, Po S, Schwartz PJ, Somers VK, Valderrabano M, Vaseghi M, Zipes DP. Clinical neurocardiology defining the value of neuroscience-based cardiovascular therapeutics. J Physiol. 2016 07 15; 594(14):3911-54. PMID: 27114333.
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    99. Teng AE, Lustgarten DL, Vijayaraman P, Tung R, Shivkumar K, Wagner GS, Ajijola OA. Usefulness of His Bundle Pacing to Achieve Electrical Resynchronization in Patients With Complete Left Bundle Branch Block and the Relation Between Native QRS Axis, Duration, and Normalization. Am J Cardiol. 2016 08 15; 118(4):527-34. PMID: 27344272.
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    100. Weiss JN, Qu Z, Shivkumar K. Ablating atrial fibrillation: A translational science perspective for clinicians. Heart Rhythm. 2016 09; 13(9):1868-77. PMID: 27241354.
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    101. Nakamura K, Ajijola OA, Aliotta E, Armour JA, Ardell JL, Shivkumar K. Pathological effects of chronic myocardial infarction on peripheral neurons mediating cardiac neurotransmission. Auton Neurosci. 2016 05; 197:34-40. PMID: 27209472.
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    102. Hamon D, Blaye-Felice MS, Bradfield JS, Chaachoui N, Tung R, Elayi CS, Vaseghi M, Dhanjal TS, Boyle NG, Maury P, Shivkumar K, Lellouche N. A New Combined Parameter to Predict Premature Ventricular Complexes Induced Cardiomyopathy: Impact and Recognition of Epicardial Origin. J Cardiovasc Electrophysiol. 2016 06; 27(6):709-17. PMID: 26924618.
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    103. Pokorney SD, Friedman DJ, Calkins H, Callans DJ, Daoud EG, Della-Bella P, Jackson KP, Shivkumar K, Saba S, Sapp J, Stevenson WG, Al-Khatib SM. Catheter ablation of ventricular tachycardia: Lessons learned from past clinical trials and implications for future clinical trials. Heart Rhythm. 2016 08; 13(8):1748-54. PMID: 27050910.
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    104. Te Riele AS, Ajijola OA, Shivkumar K, Tandri H. Role of Bilateral Sympathectomy in the Treatment of Refractory Ventricular Arrhythmias in Arrhythmogenic Right Ventricular Dysplasia/Cardiomyopathy. Circ Arrhythm Electrophysiol. 2016 Apr; 9(4):e003713. PMID: 27030701.
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    105. Saenz LC, Corrales FM, Bautista W, Traina M, Meymandi S, Rodriguez DA, Tellez LJ, Vaseghi M, Garcia F, Shivkumar K, Bradfield JS. Cardiac sympathetic denervation for intractable ventricular arrhythmias in Chagas disease. Heart Rhythm. 2016 07; 13(7):1388-94. PMID: 26969783.
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    106. Rao HB, Yu R, Chitnis N, DO D, Boyle NG, Shivkumar K, Bradfield JS. Ventricular Tachycardia Ablation in the Presence of Left Ventricular Thrombus: Safety and Efficacy. J Cardiovasc Electrophysiol. 2016 Apr; 27(4):453-9. PMID: 26643285.
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    107. Watanabe A, Seki A, Fishbein MC, Shivkumar K, Vaseghi M. Arrhythmogenic Right Ventricular Cardiomyopathy: Electroarchitecture of the Substrate. HeartRhythm Case Rep. 2016 Jan 01; 2(1):47-51. PMID: 26955520.
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    108. Rajendran PS, Nakamura K, Ajijola OA, Vaseghi M, Armour JA, Ardell JL, Shivkumar K. Myocardial infarction induces structural and functional remodelling of the intrinsic cardiac nervous system. J Physiol. 2016 Jan 15; 594(2):321-41. PMID: 26572244.
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    109. Yamakawa K, Howard-Quijano K, Zhou W, Rajendran P, Yagishita D, Vaseghi M, Ajijola OA, Armour JA, Shivkumar K, Ardell JL, Mahajan A. Central vs. peripheral neuraxial sympathetic control of porcine ventricular electrophysiology. Am J Physiol Regul Integr Comp Physiol. 2016 Mar 01; 310(5):R414-21. PMID: 26661096.
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    110. Buch E, Share M, Tung R, Benharash P, Sharma P, Koneru J, Mandapati R, Ellenbogen KA, Shivkumar K. Long-term clinical outcomes of focal impulse and rotor modulation for treatment of atrial fibrillation: A multicenter experience. Heart Rhythm. 2016 Mar; 13(3):636-41. PMID: 26498260.
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    111. Buch E, Benharash P, Frank P, Share M, Tung R, Shivkumar K, Mandapati R, Mandapati R. Response to Letter by Jalife et al Regarding Article, "Quantitative Analysis of Localized Sources Identified by Focal Impulse and Rotor Mapping in Atrial Fibrillation". Circ Arrhythm Electrophysiol. 2015 Oct; 8(5):1299-300. PMID: 26487628.
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    112. Vakil KP, Roukoz H, Tung R, Levy WC, Anand IS, Shivkumar K, Rector TS, Vaseghi M, Tholakanahalli V. Mortality prediction using a modified Seattle Heart Failure Model may improve patient selection for ventricular tachycardia ablation. Am Heart J. 2015 Dec; 170(6):1099-104. PMID: 26678631.
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    113. Buch E, Shivkumar K. Catheter Ablation of Atrial Fibrillation: Advent of Second-Generation Technologies. J Am Coll Cardiol. 2015 Sep 22; 66(12):1361-3. PMID: 26383723.
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    114. Yamakawa K, Rajendran PS, Takamiya T, Yagishita D, So EL, Mahajan A, Shivkumar K, Vaseghi M. Vagal nerve stimulation activates vagal afferent fibers that reduce cardiac efferent parasympathetic effects. Am J Physiol Heart Circ Physiol. 2015 Nov; 309(9):H1579-90. PMID: 26371172.
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    115. Romero J, Ajijola OA, Boyle N, Shivkumar K, Tung R. Prolonged high-power endocardial ablation of epicardial microreentrant VT from the LV summit in a patient with nonischemic cardiomyopathy. HeartRhythm Case Rep. 2015 Nov; 1(6):464-468. PMID: 28491608.
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    116. Ajijola OA, Romero J, Vorobiof G, Suh WM, Shivkumar K, Tung R. Hyper-response to cardiac resynchronization with permanent His bundle pacing: Is parahisian pacing sufficient? HeartRhythm Case Rep. 2015 Nov; 1(6):429-433. PMID: 27722091.
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    117. Buckley U, Yamakawa K, Takamiya T, Andrew Armour J, Shivkumar K, Ardell JL. Targeted stellate decentralization: Implications for sympathetic control of ventricular electrophysiology. Heart Rhythm. 2016 Jan; 13(1):282-8. PMID: 26282244.
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    118. Tung R, Bauer B, Schelbert H, Lynch JP, Auerbach M, Gupta P, Schiepers C, Chan S, Ferris J, Barrio M, Ajijola O, Bradfield J, Shivkumar K. Incidence of abnormal positron emission tomography in patients with unexplained cardiomyopathy and ventricular arrhythmias: The potential role of occult inflammation in arrhythmogenesis. Heart Rhythm. 2015 Dec; 12(12):2488-98. PMID: 26272522.
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    119. Buckley U, Shivkumar K, Ardell JL. Autonomic Regulation Therapy in Heart Failure. Curr Heart Fail Rep. 2015 Aug; 12(4):284-93. PMID: 26054327.
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    120. Fukuda K, Kanazawa H, Aizawa Y, Ardell JL, Shivkumar K. Cardiac innervation and sudden cardiac death. Circ Res. 2015 Jun 05; 116(12):2005-19. PMID: 26044253.
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    121. Tung R, Vaseghi M, Frankel DS, Vergara P, Di Biase L, Nagashima K, Yu R, Vangala S, Tseng CH, Choi EK, Khurshid S, Patel M, Mathuria N, Nakahara S, Tzou WS, Sauer WH, Vakil K, Tedrow U, Burkhardt JD, Tholakanahalli VN, Saliaris A, Dickfeld T, Weiss JP, Bunch TJ, Reddy M, Kanmanthareddy A, Callans DJ, Lakkireddy D, Natale A, Marchlinski F, Stevenson WG, Della Bella P, Shivkumar K. Freedom from recurrent ventricular tachycardia after catheter ablation is associated with improved survival in patients with structural heart disease: An International VT Ablation Center Collaborative Group study. Heart Rhythm. 2015 Sep; 12(9):1997-2007. PMID: 26031376.
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    122. Buckley U, Shivkumar K. Stress-induced cardiac arrhythmias: The heart-brain interaction. Trends Cardiovasc Med. 2016 Jan; 26(1):78-80. PMID: 26051207.
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    123. Buckley U, Shivkumar K. Implantable cardioverter defibrillators: even better than we thought? Eur Heart J. 2015 Jul 07; 36(26):1646-8. PMID: 25943537.
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    124. Huang WA, Shivkumar K, Vaseghi M. Device-based autonomic modulation in arrhythmia patients: the role of vagal nerve stimulation. Curr Treat Options Cardiovasc Med. 2015 May; 17(5):379. PMID: 25894588.
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    125. Latchamsetty R, Yokokawa M, Morady F, Kim HM, Mathew S, Tilz R, Kuck KH, Nagashima K, Tedrow U, Stevenson WG, Yu R, Tung R, Shivkumar K, Sarrazin JF, Arya A, Hindricks G, Vunnam R, Dickfeld T, Daoud EG, Oza NM, Bogun F. Multicenter Outcomes for Catheter Ablation of Idiopathic Premature Ventricular Complexes. JACC Clin Electrophysiol. 2015 Jun; 1(3):116-123. PMID: 29759353.
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    126. Benharash P, Buch E, Frank P, Share M, Tung R, Shivkumar K, Mandapati R. Quantitative analysis of localized sources identified by focal impulse and rotor modulation mapping in atrial fibrillation. Circ Arrhythm Electrophysiol. 2015 Jun; 8(3):554-61. PMID: 25873718.
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    127. Tung R, Shivkumar K. Epicardial Ablation of Ventricular Tachycardia. Methodist Debakey Cardiovasc J. 2015 Apr-Jun; 11(2):129-34. PMID: 26306131.
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    128. Ajijola OA, Boyle NG, Shivkumar K. Detecting and monitoring arrhythmia recurrence following catheter ablation of atrial fibrillation. Front Physiol. 2015; 6:90. PMID: 25870562.
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    129. Mao J, Moriarty JM, Mandapati R, Boyle NG, Shivkumar K, Vaseghi M. Reply to the Editor-More Awarenessless Risk-Interpretation of Ablation Risk Caused by Coronary Arterial Anatomy. Heart Rhythm. 2015 Jul; 12(7):e66-7. PMID: 25814410.
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    130. Rashid S, Rapacchi S, Shivkumar K, Plotnik A, Finn JP, Hu P. Modified wideband three-dimensional late gadolinium enhancement MRI for patients with implantable cardiac devices. Magn Reson Med. 2016 Feb; 75(2):572-84. PMID: 25772155.
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    131. Irie T, Yu R, Bradfield JS, Vaseghi M, Buch EF, Ajijola O, Macias C, Fujimura O, Mandapati R, Boyle NG, Shivkumar K, Tung R. Relationship between sinus rhythm late activation zones and critical sites for scar-related ventricular tachycardia: systematic analysis of isochronal late activation mapping. Circ Arrhythm Electrophysiol. 2015 Apr; 8(2):390-9. PMID: 25740836.
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    132. Ajijola OA, Howard-Quijano K, Scovotti J, Vaseghi M, Lee C, Mahajan A, Shivkumar K. Augmentation of cardiac sympathetic tone by percutaneous low-level stellate ganglion stimulation in humans: a feasibility study. Physiol Rep. 2015 Mar; 3(3). PMID: 25804262.
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    133. Ajijola OA, Yagishita D, Reddy NK, Yamakawa K, Vaseghi M, Downs AM, Hoover DB, Ardell JL, Shivkumar K. Remodeling of stellate ganglion neurons after spatially targeted myocardial infarction: Neuropeptide and morphologic changes. Heart Rhythm. 2015 May; 12(5):1027-35. PMID: 25640636.
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    134. Tung R, Shivkumar K. Neuraxial modulation for treatment of VT storm. J Biomed Res. 2015 Jan; 29(1):56-60. PMID: 25745476.
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    135. Yagishita D, Chui RW, Yamakawa K, Rajendran PS, Ajijola OA, Nakamura K, So EL, Mahajan A, Shivkumar K, Vaseghi M. Sympathetic nerve stimulation, not circulating norepinephrine, modulates T-peak to T-end interval by increasing global dispersion of repolarization. Circ Arrhythm Electrophysiol. 2015 Feb; 8(1):174-85. PMID: 25532528.
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    136. Mao J, Moriarty JM, Mandapati R, Boyle NG, Shivkumar K, Vaseghi M. Catheter ablation of accessory pathways near the coronary sinus: value of defining coronary arterial anatomy. Heart Rhythm. 2015 Mar; 12(3):508-514. PMID: 25485779.
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    137. Bradfield JS, Shivkumar K. Cardiac resynchronization therapy-induced proarrhythmia: understanding preferential conduction within myocardial scars. Circ Arrhythm Electrophysiol. 2014 Dec; 7(6):1000-2. PMID: 25516575.
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    138. Hamon D, Taleski J, Vaseghi M, Shivkumar K, Boyle NG. Arrhythmias in the Heart Transplant Patient. Arrhythm Electrophysiol Rev. 2014 Nov; 3(3):149-55. PMID: 26835083.
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    139. Yu R, Ma S, Tung R, Stevens S, Macias C, Bradfield J, Buch E, Vaseghi M, Fujimura O, Gornbein J, Mandapati R, Shivkumar K, Boyle NG. Catheter ablation of scar-based ventricular tachycardia: Relationship of procedure duration to outcomes and hospital mortality. Heart Rhythm. 2015 Jan; 12(1):86-94. PMID: 25285644.
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    140. Pedersen CT, Kay GN, Kalman J, Borggrefe M, Della-Bella P, Dickfeld T, Dorian P, Huikuri H, Kim YH, Knight B, Marchlinski F, Ross D, Sacher F, Sapp J, Shivkumar K, Soejima K, Tada H, Alexander ME, Triedman JK, Yamada T, Kirchhof P, Lip GY, Kuck KH, Mont L, Haines D, Indik J, Dimarco J, Exner D, Iesaka Y, Savelieva I. EHRA/HRS/APHRS expert consensus on ventricular arrhythmias. Europace. 2014 09; 16(9):1257-83. PMID: 25172618.
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    141. Pedersen CT, Kay GN, Kalman J, Borggrefe M, Della-Bella P, Dickfeld T, Dorian P, Huikuri H, Kim YH, Knight B, Marchlinski F, Ross D, Sacher F, Sapp J, Shivkumar K, Soejima K, Tada H, Alexander ME, Triedman JK, Yamada T, Kirchhof P, Lip GY, Kuck KH, Mont L, Haines D, Indik J, Dimarco J, Exner D, Iesaka Y, Savelieva I. EHRA/HRS/APHRS expert consensus on ventricular arrhythmias. Heart Rhythm. 2014 Oct; 11(10):e166-96. PMID: 25179489.
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    142. Bourke T, Buch E, Mathuria N, Michowitz Y, Yu R, Mandapati R, Shivkumar K, Tung R. Biophysical parameters during radiofrequency catheter ablation of scar-mediated ventricular tachycardia: epicardial and endocardial applications via manual and magnetic navigation. J Cardiovasc Electrophysiol. 2014 Nov; 25(11):1165-73. PMID: 24946895.
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    143. Miller JM, Kowal RC, Swarup V, Daubert JP, Daoud EG, Day JD, Ellenbogen KA, Hummel JD, Baykaner T, Krummen DE, Narayan SM, Reddy VY, Shivkumar K, Steinberg JS, Wheelan KR. Initial independent outcomes from focal impulse and rotor modulation ablation for atrial fibrillation: multicenter FIRM registry. J Cardiovasc Electrophysiol. 2014 Sep; 25(9):921-929. PMID: 24948520.
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    144. Bradfield J, Woodbury B, Traina M, Hernandez S, Sanchez D, Wachsner R, Shivkumar K, Meymandi S. Repolarization parameters are associated with mortality in chagas disease patients in the United States. Indian Pacing Electrophysiol J. 2014 Jul; 14(4):171-80. PMID: 25057218.
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    145. Yamakawa K, So EL, Rajendran PS, Hoang JD, Makkar N, Mahajan A, Shivkumar K, Vaseghi M. Electrophysiological effects of right and left vagal nerve stimulation on the ventricular myocardium. Am J Physiol Heart Circ Physiol. 2014 Sep 01; 307(5):H722-31. PMID: 25015962.
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    146. Lynch JP, Hwang J, Bradfield J, Fishbein M, Shivkumar K, Tung R. Cardiac involvement in sarcoidosis: evolving concepts in diagnosis and treatment. Semin Respir Crit Care Med. 2014 Jun; 35(3):372-90. PMID: 25007089.
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    147. Lakkireddy D, Kanmanthareddy A, Biria M, Madhu Reddy Y, Pillarisetti J, Mahapatra S, Berenbom L, Chinitz L, Atkins D, Bommana S, Tung R, DI Biase L, Shivkumar K, Natale A. Radiofrequency ablation of drug refractory ventricular tachycardia related to cocaine use: a feasibility, safety, and efficacy study. J Cardiovasc Electrophysiol. 2014 Jul; 25(7):739-46. PMID: 24724798.
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    148. Bradfield JS, Vaseghi M, Shivkumar K. Renal denervation for refractory ventricular arrhythmias. Trends Cardiovasc Med. 2014 Jul; 24(5):206-13. PMID: 25017919.
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    149. Arshad A, Johnson CK, Mittal S, Buch E, Hamam I, Tran T, Shaw RE, Musat D, Preminger M, Sichrovsky T, Herweg B, Shivkumar K, Hummel J, Steinberg JS. Comparative safety of periablation anticoagulation strategies for atrial fibrillation: data from a large multicenter study. Pacing Clin Electrophysiol. 2014 Jun; 37(6):665-73. PMID: 24797604.
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    150. Stevens SM, Tung R, Shivkumar K, Bradfield JS. A Case Of Difficult Epicardial Access For Ablation Of Ventricular Tachcyardia. J Atr Fibrillation. 2014 Apr-May; 6(6):1045. PMID: 27957064.
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    151. Tung R, Mathuria NS, Nagel R, Mandapati R, Buch EF, Bradfield JS, Vaseghi M, Boyle NG, Shivkumar K. Response to letter regarding "Impact of local ablation on inter-connected channels within ventricular scar: mechanistic implications for substrate modification". Circ Arrhythm Electrophysiol. 2014 Apr; 7(2):363. PMID: 24736430.
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    152. Angle JF, Prince EA, Matsumoto AH, Lohmeier TE, Roberts AM, Misra S, Razavi MK, Katholi RE, Sarin SN, Sica DA, Shivkumar K, Ahrar K. Proceedings from the Society of Interventional Radiology Foundation Research Consensus Panel on Renal Sympathetic Denervation. J Vasc Interv Radiol. 2014 Apr; 25(4):497-509. PMID: 24674208.
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    153. Bradfield JS, Homsi M, Shivkumar K, Miller JM. Coupling interval variability differentiates ventricular ectopic complexes arising in the aortic sinus of valsalva and great cardiac vein from other sources: mechanistic and arrhythmic risk implications. J Am Coll Cardiol. 2014 May 27; 63(20):2151-2158. PMID: 24657687.
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    154. Narayan SM, Baykaner T, Clopton P, Schricker A, Lalani GG, Krummen DE, Shivkumar K, Miller JM. Ablation of rotor and focal sources reduces late recurrence of atrial fibrillation compared with trigger ablation alone: extended follow-up of the CONFIRM trial (Conventional Ablation for Atrial Fibrillation With or Without Focal Impulse and Rotor Modulation). J Am Coll Cardiol. 2014 May 06; 63(17):1761-8. PMID: 24632280.
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    155. Rajendran PS, Buch E, Shivkumar K. Marshaling the autonomic nervous system for treatment of atrial fibrillation. J Am Coll Cardiol. 2014 May 13; 63(18):1902-3. PMID: 24561143.
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    156. Reddy YM, Chinitz L, Mansour M, Bunch TJ, Mahapatra S, Swarup V, Di Biase L, Bommana S, Atkins D, Tung R, Shivkumar K, Burkhardt JD, Ruskin J, Natale A, Lakkireddy D. Percutaneous left ventricular assist devices in ventricular tachycardia ablation: multicenter experience. Circ Arrhythm Electrophysiol. 2014 Apr; 7(2):244-50. PMID: 24532564.
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    157. Ajijola OA, Tung R, Shivkumar K. Ventricular tachycardia in ischemic heart disease substrates. Indian Heart J. 2014 Jan-Feb; 66 Suppl 1:S24-34. PMID: 24568826.
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    158. Khalsa SS, Shahabi L, Ajijola OA, Bystritsky A, Naliboff BD, Shivkumar K. Synergistic application of cardiac sympathetic decentralization and comprehensive psychiatric treatment in the management of anxiety and electrical storm. Front Integr Neurosci. 2014; 7:98. PMID: 24427121.
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    159. Remo BF, Preminger M, Bradfield J, Mittal S, Boyle N, Gupta A, Shivkumar K, Steinberg JS, Dickfeld T. Safety and efficacy of renal denervation as a novel treatment of ventricular tachycardia storm in patients with cardiomyopathy. Heart Rhythm. 2014 Apr; 11(4):541-6. PMID: 24389229.
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    160. Vaseghi M, Gima J, Kanaan C, Ajijola OA, Marmureanu A, Mahajan A, Shivkumar K. Cardiac sympathetic denervation in patients with refractory ventricular arrhythmias or electrical storm: intermediate and long-term follow-up. Heart Rhythm. 2014 Mar; 11(3):360-6. PMID: 24291775.
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    161. Methangkool E, Chua JH, Gopinath A, Shivkumar K, Mahajan A. Anesthetic considerations for thoracoscopic sympathetic ganglionectomy to treat ventricular tachycardia storm: a single-center experience. J Cardiothorac Vasc Anesth. 2014 Feb; 28(1):69-75. PMID: 24290748.
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    162. Bradfield JS, Tung R, Shivkumar K. Transmural "Scar-to-Scar" Reentrant Ventricular Tachycardia. Indian Pacing Electrophysiol J. 2013 Nov; 13(6):212-6. PMID: 24482562.
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    163. Rashid S, Rapacchi S, Vaseghi M, Tung R, Shivkumar K, Finn JP, Hu P. Improved late gadolinium enhancement MR imaging for patients with implanted cardiac devices. Radiology. 2014 Jan; 270(1):269-74. PMID: 24086074.
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    164. Tung R, Mathuria NS, Nagel R, Mandapati R, Buch EF, Bradfield JS, Vaseghi M, Boyle NG, Shivkumar K. Impact of local ablation on interconnected channels within ventricular scar: mechanistic implications for substrate modification. Circ Arrhythm Electrophysiol. 2013 Dec; 6(6):1131-8. PMID: 24162832.
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    165. Stevens SM, Tung R, Rashid S, Gima J, Cote S, Pavez G, Khan S, Ennis DB, Finn JP, Boyle N, Shivkumar K, Hu P. Device artifact reduction for magnetic resonance imaging of patients with implantable cardioverter-defibrillators and ventricular tachycardia: late gadolinium enhancement correlation with electroanatomic mapping. Heart Rhythm. 2014 Feb; 11(2):289-98. PMID: 24140812.
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    166. van Dam PM, Tung R, Shivkumar K, Laks M. Quantitative localization of premature ventricular contractions using myocardial activation ECGI from the standard 12-lead electrocardiogram. J Electrocardiol. 2013 Nov-Dec; 46(6):574-9. PMID: 24028996.
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    167. Tung R, Shivkumar K. Unusual response to entrainment of ventricular tachycardia: in or out? Heart Rhythm. 2014 Apr; 11(4):725-7. PMID: 24016698.
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    168. Ajijola OA, Yagishita D, Patel KJ, Vaseghi M, Zhou W, Yamakawa K, So E, Lux RL, Mahajan A, Shivkumar K. Focal myocardial infarction induces global remodeling of cardiac sympathetic innervation: neural remodeling in a spatial context. Am J Physiol Heart Circ Physiol. 2013 Oct 01; 305(7):H1031-40. PMID: 23893167.
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    169. Vaseghi M, Yamakawa K, Sinha A, So EL, Zhou W, Ajijola OA, Lux RL, Laks M, Shivkumar K, Mahajan A. Modulation of regional dispersion of repolarization and T-peak to T-end interval by the right and left stellate ganglia. Am J Physiol Heart Circ Physiol. 2013 Oct 01; 305(7):H1020-30. PMID: 23893168.
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    170. Yagishita D, Ajijola OA, Vaseghi M, Nsair A, Zhou W, Yamakawa K, Tung R, Mahajan A, Shivkumar K. Electrical homogenization of ventricular scar by application of collagenase: a novel strategy for arrhythmia therapy. Circ Arrhythm Electrophysiol. 2013 Aug; 6(4):776-83. PMID: 23873142.
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    171. Vaseghi M, Macias C, Tung R, Shivkumar K. Percutaneous interventricular septal access in a patient with aortic and mitral mechanical valves: a novel technique for catheter ablation of ventricular tachycardia. Heart Rhythm. 2013 Jul; 10(7):1069-73. PMID: 23643678.
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    172. Viskin S, Wilde AA, Guevara-Valdivia ME, Daoulah A, Krahn AD, Zipes DP, Halkin A, Shivkumar K, Boyle NG, Adler A, Belhassen B, Schapachnik E, Asrar F, Rosso R. Quinidine, a life-saving medication for Brugada syndrome, is inaccessible in many countries. J Am Coll Cardiol. 2013 Jun 11; 61(23):2383-7. PMID: 23583244.
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    173. Narayan SM, Krummen DE, Clopton P, Shivkumar K, Miller JM. Direct or coincidental elimination of stable rotors or focal sources may explain successful atrial fibrillation ablation: on-treatment analysis of the CONFIRM trial (Conventional ablation for AF with or without focal impulse and rotor modulation). J Am Coll Cardiol. 2013 Jul 09; 62(2):138-147. PMID: 23563126.
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    174. Tung R, Shivkumar K. Integrated care for management of ventricular arrhythmias: can a specialized unit and catheter ablation improve mortality? Circulation. 2013 Apr 02; 127(13):1354-6. PMID: 23547176.
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    175. Bradfield JS, Huang W, Tung R, Buch E, Okhovat JP, Fujimura O, Boyle NG, Gornbein J, Ellenbogen KA, Shivkumar K. Tissue voltage discordance during tachycardia versus sinus rhythm: implications for catheter ablation. Heart Rhythm. 2013 Jun; 10(6):800-4. PMID: 23434619.
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    176. Narayan SM, Shivkumar K, Krummen DE, Miller JM, Rappel WJ. Panoramic electrophysiological mapping but not electrogram morphology identifies stable sources for human atrial fibrillation: stable atrial fibrillation rotors and focal sources relate poorly to fractionated electrograms. Circ Arrhythm Electrophysiol. 2013 Feb; 6(1):58-67. PMID: 23392583.
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    177. Zhou W, Yamakawa K, Benharash P, Ajijola O, Ennis D, Hadaya J, Vaseghi M, Shivkumar K, Mahajan A. Effect of stellate ganglia stimulation on global and regional left ventricular function as assessed by speckle tracking echocardiography. Am J Physiol Heart Circ Physiol. 2013 Mar 15; 304(6):H840-7. PMID: 23335795.
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    178. Tung R, Shivkumar K. The value of image integration for epicardial catheter ablation of ventricular tachycardia. JACC Cardiovasc Imaging. 2013 Jan; 6(1):53-5. PMID: 23328561.
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    179. Bradfield JS, Tung R, Boyle NG, Buch E, Shivkumar K. Our approach to minimize risk of epicardial access: standard techniques with the addition of electroanatomic mapping guidance. J Cardiovasc Electrophysiol. 2013 Jun; 24(6):723-7. PMID: 23279311.
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    180. Ajijola OA, Vaseghi M, Zhou W, Yamakawa K, Benharash P, Hadaya J, Lux RL, Mahajan A, Shivkumar K. Functional differences between junctional and extrajunctional adrenergic receptor activation in mammalian ventricle. Am J Physiol Heart Circ Physiol. 2013 Feb 15; 304(4):H579-88. PMID: 23241324.
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    181. Tung R, Michowitz Y, Yu R, Mathuria N, Vaseghi M, Buch E, Bradfield J, Fujimura O, Gima J, Discepolo W, Mandapati R, Shivkumar K. Epicardial ablation of ventricular tachycardia: an institutional experience of safety and efficacy. Heart Rhythm. 2013 Apr; 10(4):490-8. PMID: 23246598.
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    182. Mandapati R, Shivkumar K. In silico to in vivo: mutation-specific modeling of arrhythmia risk. J Am Coll Cardiol. 2012 Nov 20; 60(21):2192-3. PMID: 23153845.
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    183. Shivkumar K, Ellenbogen KA, Hummel JD, Miller JM, Steinberg JS. Acute termination of human atrial fibrillation by identification and catheter ablation of localized rotors and sources: first multicenter experience of focal impulse and rotor modulation (FIRM) ablation. J Cardiovasc Electrophysiol. 2012 Dec; 23(12):1277-85. PMID: 23130890.
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    184. Tholakanahalli VN, Bertog S, Roukoz H, Shivkumar K. Catheter ablation of ventricular tachycardia using intracoronary wire mapping and coil embolization: description of a new technique. Heart Rhythm. 2013 Feb; 10(2):292-6. PMID: 23089899.
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    185. Boyle NG, Shivkumar K. Epicardial interventions in electrophysiology. Circulation. 2012 Oct 02; 126(14):1752-69. PMID: 23027811.
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    186. Bradfield JS, Buch E, Shivkumar K. Interventions to decrease the morbidity and mortality associated with implantable cardioverter-defibrillator shocks. Curr Opin Crit Care. 2012 Oct; 18(5):432-7. PMID: 22889870.
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    187. Mathuria N, Tung R, Shivkumar K. Advances in ablation of ventricular tachycardia in nonischemic cardiomyopathy. Curr Cardiol Rep. 2012 Oct; 14(5):577-83. PMID: 22843484.
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    188. Tung R, Shivkumar K, Mandapati R. Ablation of Post Transplant Atrial Flutter and Pseudo-fibrillation Using Magnetic Navigation via a Superior Approach. Indian Pacing Electrophysiol J. 2012 Sep; 12(5):229-32. PMID: 23071385.
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    189. Bourke T, Moriarty J, Boyle NG, Shivkumar K. Atrial Fibrillation Ablation: Do We Really Need Preprocedural Imaging? Card Electrophysiol Clin. 2012 Sep; 4(3):305-15. PMID: 26939950.
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    190. Di Biase L, Santangeli P, Bai R, Tung R, David Burkhardt J, Shivkumar K, Natale A. The Emerging Role of Epicardial Ablation. Card Electrophysiol Clin. 2012 Sep; 4(3):425-37. PMID: 26939962.
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    191. Vaseghi M, Shivkumar K. Neuraxial modulation for ventricular arrhythmias: a new hope. Heart Rhythm. 2012 Nov; 9(11):1888-9. PMID: 23036525.
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    192. Ajijola OA, Wisco JJ, Lambert HW, Mahajan A, Stark E, Fishbein MC, Shivkumar K. Extracardiac neural remodeling in humans with cardiomyopathy. Circ Arrhythm Electrophysiol. 2012 Oct; 5(5):1010-116. PMID: 22923270.
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    193. Michowitz Y, Buch E, Bourke T, Tung R, Bradfield J, Mathuria N, Boyle NG, Shivkumar K. Unipolar and bipolar electrogram characteristics predict exit block during pulmonary vein antral isolation. Pacing Clin Electrophysiol. 2012 Nov; 35(11):1294-301. PMID: 22897649.
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    194. Vaseghi M, Fujimura O, Shivkumar K. Narrow QRS complex tachycardia: what is the mechanism? Heart Rhythm. 2013 Sep; 10(9):1402-4. PMID: 22885663.
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    195. Ajijola OA, Vaseghi M, Mahajan A, Shivkumar K. Bilateral cardiac sympathetic denervation: why, who and when? Expert Rev Cardiovasc Ther. 2012 Aug; 10(8):947-9. PMID: 23030281.
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    196. Narayan SM, Krummen DE, Shivkumar K, Clopton P, Rappel WJ, Miller JM. Treatment of atrial fibrillation by the ablation of localized sources: CONFIRM (Conventional Ablation for Atrial Fibrillation With or Without Focal Impulse and Rotor Modulation) trial. J Am Coll Cardiol. 2012 Aug 14; 60(7):628-36. PMID: 22818076.
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    197. Tung R, Buch E, Shivkumar K. Catheter ablation of atrial fibrillation. Circulation. 2012 Jul 10; 126(2):223-9. PMID: 22777665.
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    198. Bradfield J, Shapiro S, Finch W, Tung R, Boyle NG, Buch E, Mathuria N, Mandapati R, Shivkumar K, Bersohn M. Catheter ablation of typical atrial flutter in severe pulmonary hypertension. J Cardiovasc Electrophysiol. 2012 Nov; 23(11):1185-90. PMID: 22734591.
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    199. Michowitz Y, Tung R, Athill C, Shivkumar K. Ventricular tachycardia from remote blunt chest trauma: combined epicardial-endocardial right ventricular substrate characterization. Pacing Clin Electrophysiol. 2012 May; 35(5):e127-30. PMID: 22564003.
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    200. Bradfield J, Tung R, Mandapati R, Boyle NG, Shivkumar K. Catheter ablation utilizing remote magnetic navigation: a review of applications and outcomes. Pacing Clin Electrophysiol. 2012 Aug; 35(8):1021-34. PMID: 22510160.
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    201. Vaseghi M, Zhou W, Shi J, Ajijola OA, Hadaya J, Shivkumar K, Mahajan A. Sympathetic innervation of the anterior left ventricular wall by the right and left stellate ganglia. Heart Rhythm. 2012 Aug; 9(8):1303-9. PMID: 22465457.
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    202. Ajijola OA, Shivkumar K. Neural remodeling and myocardial infarction: the stellate ganglion as a double agent. J Am Coll Cardiol. 2012 Mar 06; 59(10):962-4. PMID: 22381433.
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    203. Bradfield J, Boyle NG, Mandapati R, Shivkumar K. The emerging role of cardiac resynchronization therapy in milder heart failure: are we implanting too late for response? Curr Heart Fail Rep. 2012 Mar; 9(1):51-6. PMID: 22135184.
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    204. Vaseghi M, Lux RL, Mahajan A, Shivkumar K. Sympathetic stimulation increases dispersion of repolarization in humans with myocardial infarction. Am J Physiol Heart Circ Physiol. 2012 May 01; 302(9):H1838-46. PMID: 22345568.
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    205. Tung R, Mathuria N, Michowitz Y, Yu R, Buch E, Bradfield J, Mandapati R, Wiener I, Boyle N, Shivkumar K. Functional pace-mapping responses for identification of targets for catheter ablation of scar-mediated ventricular tachycardia. Circ Arrhythm Electrophysiol. 2012 Apr; 5(2):264-72. PMID: 22333344.
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    206. Stephens DN, Truong UT, Nikoozadeh A, Oralkan O, Seo CH, Cannata J, Dentinger A, Thomenius K, de la Rama A, Nguyen T, Lin F, Khuri-Yakub P, Mahajan A, Shivkumar K, O'Donnell M, Sahn DJ. First in vivo use of a capacitive micromachined ultrasound transducer array-based imaging and ablation catheter. J Ultrasound Med. 2012 Feb; 31(2):247-56. PMID: 22298868.
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    207. Mathuria N, Buch E, Shivkumar K. Pleuropericardial fistula formation after prior epicardial catheter ablation for ventricular tachycardia. Circ Arrhythm Electrophysiol. 2012 Feb; 5(1):e18-9. PMID: 22334435.
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    208. Ajijola OA, Lellouche N, Bourke T, Tung R, Ahn S, Mahajan A, Shivkumar K. Bilateral cardiac sympathetic denervation for the management of electrical storm. J Am Coll Cardiol. 2012 Jan 03; 59(1):91-2. PMID: 22192676.
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    209. Mathuria NS, Vaseghi M, Buch E, Shivkumar K. Successful ablation of an epicardial ventricular tachycardia using a surgical ablation tool. Circ Arrhythm Electrophysiol. 2011 Dec; 4(6):e84-6. PMID: 22203665.
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    210. Discepolo W, Buch E, Shivkumar K. How to target postablation perimitral flutter: valve isthmus or PV triggers? J Cardiovasc Electrophysiol. 2012 Feb; 23(2):145-6. PMID: 22049914.
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    211. Ramirez RJ, Ajijola OA, Zhou W, Holmström B, Lüning H, Laks MM, Shivkumar K, Mahajan A. A new electrocardiographic marker for sympathetic nerve stimulation: modulation of repolarization by stimulation of stellate ganglia. J Electrocardiol. 2011 Nov-Dec; 44(6):694-9. PMID: 21917265.
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    212. Bradfield J, Tung R, Boyle NG, Shivkumar K. Managing patients with ICD shocks and programming tachycardia therapies during acute heart failure syndromes. Heart Fail Rev. 2011 Sep; 16(5):449-56. PMID: 21451976.
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    213. Shivkumar K, Narayan SM. Imaging cardiac arrhythmias. Sci Transl Med. 2011 Aug 31; 3(98):98fs2. PMID: 21885402.
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    214. Michowitz Y, Mathuria N, Shivkumar K, Mandapati R. Wide complex tachycardia with a unique mode of termination: what is the mechanism? Pacing Clin Electrophysiol. 2012 Jan; 35(1):97-9. PMID: 21819431.
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    215. Fonseca CG, Backhaus M, Bluemke DA, Britten RD, Chung JD, Cowan BR, Dinov ID, Finn JP, Hunter PJ, Kadish AH, Lee DC, Lima JA, Medrano-Gracia P, Shivkumar K, Suinesiaputra A, Tao W, Young AA. The Cardiac Atlas Project--an imaging database for computational modeling and statistical atlases of the heart. Bioinformatics. 2011 Aug 15; 27(16):2288-95. PMID: 21737439.
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    216. Seo CH, Stephens DN, Cannata J, Dentinger A, Lin F, Park S, Wildes D, Thomenius KE, Chen P, Nguyen T, de La Rama A, Jeong JS, Mahajan A, Shivkumar K, Nikoozadeh A, Oralkan O, Truong U, Sahn DJ, Khuri-Yakub PT, O'Donnell M. The feasibility of using thermal strain imaging to regulate energy delivery during intracardiac radio-frequency ablation. IEEE Trans Ultrason Ferroelectr Freq Control. 2011 Jul; 58(7):1406-17. PMID: 21768025.
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    217. Lee W, Griffin W, Wildes D, Buckley D, Topka T, Chodakauskas T, Langer M, Calisti S, Bergstøl S, Malacrida JP, Lanteri F, Maffre J, McDaniel B, Shivkumar K, Cummings J, Callans D, Silvestry F, Packer D. A 10-Fr ultrasound catheter with integrated micromotor for 4-D intracardiac echocardiography. IEEE Trans Ultrason Ferroelectr Freq Control. 2011 Jul; 58(7):1478-91. PMID: 21768032.
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    218. Bai R, Di Biase L, Shivkumar K, Mohanty P, Tung R, Santangeli P, Saenz LC, Vacca M, Verma A, Khaykin Y, Mohanty S, Burkhardt JD, Hongo R, Beheiry S, Dello Russo A, Casella M, Pelargonio G, Santarelli P, Sanchez J, Tondo C, Natale A. Ablation of ventricular arrhythmias in arrhythmogenic right ventricular dysplasia/cardiomyopathy: arrhythmia-free survival after endo-epicardial substrate based mapping and ablation. Circ Arrhythm Electrophysiol. 2011 Aug; 4(4):478-85. PMID: 21665983.
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    220. Bourke T, Mathuria N, Michowitz Y, Shivkumar K. Hybrid techniques and neuraxial modulation for treatment of ventricular tachycardia. Future Cardiol. 2011 May; 7(3):273-6. PMID: 21627467.
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    221. Lellouche N, De Diego C, Boyle NG, Wiener I, Akopyan G, Child JS, Shivkumar K. Relationship between mechanical and electrical remodelling in patients with cardiac resynchronization implanted defibrillators. Europace. 2011 Aug; 13(8):1180-7. PMID: 21486911.
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    222. Francis J, Bourke T, Shivkumar K. Calming the storm by sympatholysis. Indian Pacing Electrophysiol J. 2011 Mar 25; 11(2):31-3. PMID: 21468246.
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    223. Di Biase L, Al-Ahamad A, Santangeli P, Hsia HH, Sanchez J, Bai R, Bailey S, Horton R, Gallinghouse GJ, Burkhardt DJ, Lakkireddy D, Yang Y, Badhwar N, Scheinman M, Tung R, Dello Russo A, Pelargonio G, Casella M, Tomassoni G, Shivkumar K, Natale A. Safety and outcomes of cryoablation for ventricular tachyarrhythmias: results from a multicenter experience. Heart Rhythm. 2011 Jul; 8(7):968-74. PMID: 21376835.
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    224. Nakahara S, Vaseghi M, Ramirez RJ, Fonseca CG, Lai CK, Finn JP, Mahajan A, Boyle NG, Shivkumar K. Characterization of myocardial scars: electrophysiological imaging correlates in a porcine infarct model. Heart Rhythm. 2011 Jul; 8(7):1060-7. PMID: 21354335.
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    225. Michowitz Y, Lellouche N, Contractor T, Bourke T, Wiener I, Buch E, Boyle N, Bersohn M, Shivkumar K. Defibrillation threshold testing fails to show clinical benefit during long-term follow-up of patients undergoing cardiac resynchronization therapy defibrillator implantation. Europace. 2011 May; 13(5):683-8. PMID: 21252192.
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    226. Tung R, Nakahara S, Maccabelli G, Buch E, Wiener I, Boyle NG, Carbucicchio C, Bella PD, Shivkumar K. Ultra high-density multipolar mapping with double ventricular access: a novel technique for ablation of ventricular tachycardia. J Cardiovasc Electrophysiol. 2011 Jan; 22(1):49-56. PMID: 20653813.
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    227. Kneller J, Shivkumar K, Tung R. Assessment of His-Purkinje reserve: what is the mechanism of block? Heart Rhythm. 2012 Mar; 9(3):465-6. PMID: 21126603.
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    228. Tung R, Nakahara S, Ramirez R, Gui D, Magyar C, Lai C, Fishbein M, Shivkumar K. Accuracy of combined endocardial and epicardial electroanatomic mapping of a reperfused porcine infarct model: a comparison of electrofield and magnetic systems with histopathologic correlation. Heart Rhythm. 2011 Mar; 8(3):439-47. PMID: 21056123.
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    229. Bello D, Einhorn A, Kaushal R, Kenchaiah S, Raney A, Fieno D, Narula J, Goldberger J, Shivkumar K, Subacius H, Kadish A. Cardiac magnetic resonance imaging: infarct size is an independent predictor of mortality in patients with coronary artery disease. Magn Reson Imaging. 2011 Jan; 29(1):50-6. PMID: 20980115.
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    230. Bradfield J, Buch E, Shivkumar K. Three dissociated rhythms after ablation of an atypical right atrial flutter. J Cardiovasc Electrophysiol. 2011 Apr; 22(4):477. PMID: 21489018.
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    231. Michowitz Y, Nakahara S, Bourke T, Buch E, Vaseghi M, De Diego C, Wiener I, Mahajan A, Shivkumar K. Electrophysiological differences between the epicardium and the endocardium of the left atrium. Pacing Clin Electrophysiol. 2011 Jan; 34(1):37-46. PMID: 20946283.
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    232. Bradfield J, Buch E, Tung R, Shivkumar K. Recurrent irregular tachycardia that consistently terminates on a P wave: what is the mechanism? J Cardiovasc Electrophysiol. 2010 Sep; 21(9):1062-3. PMID: 20455981.
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    233. Aboulhosn J, Williams R, Shivkumar K, Barkowski R, Plunkett M, Miner P, Houser L, Laks H, Reemtsen B, Shannon K, Child J. Arrhythmia recurrence in adult patients with single ventricle physiology following surgical Fontan conversion. Congenit Heart Dis. 2010 Sep-Oct; 5(5):430-4. PMID: 21087427.
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    234. Nakahara S, Tung R, Ramirez RJ, Gima J, Wiener I, Mahajan A, Boyle NG, Shivkumar K. Distribution of late potentials within infarct scars assessed by ultra high-density mapping. Heart Rhythm. 2010 Dec; 7(12):1817-24. PMID: 20682358.
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    235. Tung R, Boyle NG, Shivkumar K. Catheter ablation of ventricular tachycardia. Circulation. 2010 Jul 20; 122(3):e389-91. PMID: 20644021.
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    236. Michowitz Y, Mathuria N, Tung R, Esmailian F, Kwon M, Nakahara S, Bourke T, Boyle NG, Mahajan A, Shivkumar K. Hybrid procedures for epicardial catheter ablation of ventricular tachycardia: value of surgical access. Heart Rhythm. 2010 Nov; 7(11):1635-43. PMID: 20633702.
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    237. Shackley BS, Nguyen TP, Shivkumar K, Finn PJ, Fishbein MC. Idiopathic massive myocardial calcification: a case report and review of the literature. Cardiovasc Pathol. 2011 Mar-Apr; 20(2):e79-83. PMID: 20598909.
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    238. Vaseghi M, Shivkumar K. Catheter ablation of idiopathic ventricular tachycardia. Circ Arrhythm Electrophysiol. 2010 Jun; 3(3):219-21. PMID: 20551420.
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    239. Mandapati R, Shivkumar K. The autonomic stress of sleep: Sleeping the sleep of death. Heart Rhythm. 2010 Aug; 7(8):1075-6. PMID: 20621623.
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    240. Nakahara S, Tung R, Ramirez RJ, Michowitz Y, Vaseghi M, Buch E, Gima J, Wiener I, Mahajan A, Boyle NG, Shivkumar K. Characterization of the arrhythmogenic substrate in ischemic and nonischemic cardiomyopathy implications for catheter ablation of hemodynamically unstable ventricular tachycardia. J Am Coll Cardiol. 2010 May 25; 55(21):2355-65. PMID: 20488307.
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    241. Santangeli P, Di Biase L, Lakkireddy D, Burkhardt JD, Pillarisetti J, Michowitz Y, Sanchez JE, Horton R, Mohanty P, Gallinghouse GJ, Dello Russo A, Casella M, Pelargonio G, Santarelli P, Verma A, Narasimhan C, Shivkumar K, Natale A. Radiofrequency catheter ablation of ventricular arrhythmias in patients with hypertrophic cardiomyopathy: safety and feasibility. Heart Rhythm. 2010 Aug; 7(8):1036-42. PMID: 20493276.
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    242. Bourke T, Vaseghi M, Michowitz Y, Sankhla V, Shah M, Swapna N, Boyle NG, Mahajan A, Narasimhan C, Lokhandwala Y, Shivkumar K. Neuraxial modulation for refractory ventricular arrhythmias: value of thoracic epidural anesthesia and surgical left cardiac sympathetic denervation. Circulation. 2010 Jun 01; 121(21):2255-62. PMID: 20479150.
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    243. Bradfield J, Mathuria N, Tung R, Shivkumar K. Coronary sinus fistula: a reason not to implant a transvenous left ventricular lead. Heart Rhythm. 2011 Oct; 8(10):1658. PMID: 20433945.
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    244. Buch E, Nakahara S, Boyle NG, Shivkumar K. Epicardial Catheter Ablation of Atrial Fibrillation. Card Electrophysiol Clin. 2010 Mar; 2(1):113-120. PMID: 28770729.
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    245. Shivkumar K, Boyle NG. Preface. Card Electrophysiol Clin. 2010 Mar; 2(1):xv-xvi. PMID: 28770742.
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    246. Bradfield J, Shivkumar K. ACP Journal Club. Review: Early treatment of a cardiovascular event with nitrates or ACE inhibitors reduces short-term mortality. Ann Intern Med. 2010 Feb 16; 152(4):JC-23. PMID: 20157127.
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    247. Natale A, Raviele A, Al-Ahmad A, Alfieri O, Aliot E, Almendral J, Breithardt G, Brugada J, Calkins H, Callans D, Cappato R, Camm JA, Della Bella P, Guiraudon GM, Haïssaguerre M, Hindricks G, Ho SY, Kuck KH, Marchlinski F, Packer DL, Prystowsky EN, Reddy VY, Ruskin JN, Scanavacca M, Shivkumar K, Soejima K, Stevenson WJ, Themistoclakis S, Verma A, Wilber D. Venice Chart International Consensus document on ventricular tachycardia/ventricular fibrillation ablation. J Cardiovasc Electrophysiol. 2010 Mar; 21(3):339-79. PMID: 20082650.
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    248. Khuri-Yakub BT, Oralkan O, Nikoozadeh A, Wygant IO, Zhuang S, Gencel M, Choe JW, Stephens DN, de la Rama A, Chen P, Lin F, Dentinger A, Wildes D, Thomenius K, Shivkumar K, Mahajan A, Seo CH, O'Donnell M, Truong U, Sahn DJ. Miniaturized ultrasound imaging probes enabled by CMUT arrays with integrated frontend electronic circuits. Conf Proc IEEE Eng Med Biol Soc. 2010; 2010:5987-90. PMID: 21097106.
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    249. Tung R, Nakahara S, Ramirez R, Lai C, Fishbein MC, Shivkumar K. Distinguishing epicardial fat from scar: analysis of electrograms using high-density electroanatomic mapping in a novel porcine infarct model. Heart Rhythm. 2010 Mar; 7(3):389-95. PMID: 20185114.
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    250. Shivkumar K, Buch E, Boyle NG. Nonpharmacologic management of atrial fibrillation: role of the pulmonary veins and posterior left atrium. Heart Rhythm. 2009 Dec; 6(12 Suppl):S5-S11. PMID: 19959144.
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    251. Dave AS, Aboulhosn J, Child JS, Shivkumar K. Transconduit puncture for catheter ablation of atrial tachycardia in a patient with extracardiac Fontan palliation. Heart Rhythm. 2010 Mar; 7(3):413-6. PMID: 20097619.
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    252. Tung R, Shivkumar K. Ripple mapping: making electroanatomic mapping user-friendly. Heart Rhythm. 2009 Dec; 6(12):1763-4. PMID: 19959126.
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    253. Nakahara S, Ramirez RJ, Buch E, Michowitz Y, Vaseghi M, de Diego C, Boyle NG, Mahajan A, Shivkumar K. Intrapericardial balloon placement for prevention of collateral injury during catheter ablation of the left atrium in a porcine model. Heart Rhythm. 2010 Jan; 7(1):81-7. PMID: 19914143.
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    254. Shivkumar K, Tung R. Improving our understanding of epicardial ventricular tachycardia in nonischemic cardiomyopathy. J Am Coll Cardiol. 2009 Aug 25; 54(9):809-11. PMID: 19695458.
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    255. Ho JK, Nakahara S, Shivkumar K, Mahajan A. Live three-dimensional transesophageal echocardiographic imaging of novel multielectrode ablation catheters. Heart Rhythm. 2010 Apr; 7(4):570-1. PMID: 19875342.
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    256. Schenke-Layland K, Stock UA, Nsair A, Xie J, Angelis E, Fonseca CG, Larbig R, Mahajan A, Shivkumar K, Fishbein MC, MacLellan WR. Cardiomyopathy is associated with structural remodelling of heart valve extracellular matrix. Eur Heart J. 2009 Sep; 30(18):2254-65. PMID: 19561339.
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    257. Buch E, Tung R, Shehata M, Shivkumar K. Alternating cycle length during supraventricular tachycardia: what is the mechanism? J Cardiovasc Electrophysiol. 2009 Sep; 20(9):1071-3. PMID: 19460077.
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    258. Ho JK, Liakopoulos OJ, Crowley R, Yezbick AB, Sanchez E, Shivkumar K, Mahajan A. In vivo detection of myocardial ischemia in pigs using visible light spectroscopy. Anesth Analg. 2009 Apr; 108(4):1185-92. PMID: 19299784.
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    259. Cesario D, Kedia R, Desai N, Aboulhosn J, Uslan D, Boyle N, Fujimura O, Shehata M, Buch E, Shivkumar K. Device extraction in adults with congenital heart disease. Pacing Clin Electrophysiol. 2009 Mar; 32(3):340-5. PMID: 19272064.
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    260. Hijazi ZM, Shivkumar K, Sahn DJ. Intracardiac echocardiography during interventional and electrophysiological cardiac catheterization. Circulation. 2009 Feb 03; 119(4):587-96. PMID: 19188519.
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    261. Stephens DN, O'Donnell M, Thomenius K, Dentinger A, Wildes D, Chen P, Shung KK, Cannata J, Khuri-Yakub P, Oralkan O, Mahajan A, Shivkumar K, Sahn DJ. Experimental studies with a 9F forward-looking intracardiac imaging and ablation catheter. J Ultrasound Med. 2009 Feb; 28(2):207-15. PMID: 19168770.
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    262. Boyle NG, Shivkumar K. Atrial fibrillation in congestive heart failure: current management. Cardiol Clin. 2009 Feb; 27(1):79-93, viii-ix. PMID: 19111766.
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    263. Vaseghi M, Lellouche N, Ritter H, Fonarow GC, Patel JK, Moriguchi J, Fishbein MC, Kobashigawa JA, Shivkumar K. Mode and mechanisms of death after orthotopic heart transplantation. Heart Rhythm. 2009 Apr; 6(4):503-9. PMID: 19324311.
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    264. Sahn DJ, Stephens DN, Cannata JM, Shung K, Oralkan O, Nikoozadeh A, Khuri-Yakub BT, Nguyen H, Chen P, Dentinger AM, Wildes D, Thomenius KE, Mahajan A, Shivkumar K, O'Donnell M. A family of intracardiac ultrasound imaging devices designed for guidance of electrophysiology ablation procedures. Conf Proc IEEE Eng Med Biol Soc. 2009; 2009:1913-7. PMID: 19963529.
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    265. Nikoozadeh A, Wygant IO, Lin DS, Oralkan O, Ergun AS, Stephens DN, Thomenius KE, Dentinger AM, Wildes D, Akopyan G, Shivkumar K, Mahajan A, Sahn DJ, Khuri-Yakub BT. Forward-looking intracardiac ultrasound imaging using a 1-D CMUT array integrated with custom front-end electronics. IEEE Trans Ultrason Ferroelectr Freq Control. 2008 Dec; 55(12):2651-60. PMID: 19126489.
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    266. Buch E, Nakahara S, Shivkumar K. Intra-pericardial balloon retraction of the left atrium: a novel method to prevent esophageal injury during catheter ablation. Heart Rhythm. 2008 Oct; 5(10):1473-5. PMID: 18783994.
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    267. Ramirez RJ, Shivkumar K. Latent atrial fibrillation triggers originating in accessory pathways. Heart Rhythm. 2008 Sep; 5(9):1248-9. PMID: 18774097.
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    268. Vaseghi M, Boyle NG, Kedia R, Patel JK, Cesario DA, Wiener I, Kobashigawa JA, Shivkumar K. Supraventricular tachycardia after orthotopic cardiac transplantation. J Am Coll Cardiol. 2008 Jun 10; 51(23):2241-9. PMID: 18534271.
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    269. Buch E, Nakahara S, Shivkumar K. Diagnostic maneuver during narrow-complex tachycardia: what is the arrhythmia mechanism? Heart Rhythm. 2009 May; 6(5):716-7. PMID: 19332390.
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    270. Vaseghi M, Shivkumar K. The role of the autonomic nervous system in sudden cardiac death. Prog Cardiovasc Dis. 2008 May-Jun; 50(6):404-19. PMID: 18474284.
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    271. Buch E, Shivkumar K. Exploring the potential of pulmonary vein recordings: can they help elucidate mechanisms of paroxysmal atrial fibrillation? Europace. 2008 Jun; 10(6):690-1. PMID: 18420651.
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    272. Boyle NG, Shivkumar K. Atrial fibrillation and congestive heart failure. Curr Heart Fail Rep. 2008 Mar; 5(1):11-5. PMID: 18460289.
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    273. Stephens DN, Cannata J, Liu R, Zhao JZ, Shung KK, Nguyen H, Chia R, Dentinger A, Wildes D, Thomenius KE, Mahajan A, Shivkumar K, Kim K, O'Donnell M, Sahn D. The acoustic lens design and in vivo use of a multifunctional catheter combining intracardiac ultrasound imaging and electrophysiology sensing. IEEE Trans Ultrason Ferroelectr Freq Control. 2008 Mar; 55(3):602-18. PMID: 18407850.
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    274. Mahajan A, Crowley R, Ho JK, Sanchez E, Trivedi P, Natterson B, Shivkumar K. Imaging the ascending aorta and aortic arch using transesophageal echocardiography: the expanded aortic view. Echocardiography. 2008 Apr; 25(4):408-13. PMID: 18279407.
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    275. Lellouche N, De Diego C, Vaseghi M, Buch E, Cesario DA, Mahajan A, Wiener I, Fonarow GC, Boyle NG, Shivkumar K. Cardiac resynchronization therapy response is associated with shorter duration of atrial fibrillation. Pacing Clin Electrophysiol. 2007 Nov; 30(11):1363-8. PMID: 17976100.
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    276. Li XK, Pemberton J, Thomenius K, Dentinger A, Lowe RI, Ashraf M, Shung KK, Chia R, Stephens DN, O'Donnell M, Mahajan A, Balaji S, Shivkumar K, Sahn DJ. Development of an electrophysiology (EP)-enabled intracardiac ultrasound catheter integrated with NavX 3-dimensional electrofield mapping for guiding cardiac EP interventions: experimental studies. J Ultrasound Med. 2007 Nov; 26(11):1565-74. PMID: 17957051.
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    277. Lellouche N, Buch E, Celigoj A, Siegerman C, Cesario D, De Diego C, Mahajan A, Boyle NG, Wiener I, Garfinkel A, Shivkumar K. Functional characterization of atrial electrograms in sinus rhythm delineates sites of parasympathetic innervation in patients with paroxysmal atrial fibrillation. J Am Coll Cardiol. 2007 Oct 02; 50(14):1324-31. PMID: 17903630.
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    278. Shivkumar K. Percutaneous epicardial ablation of atrial fibrillation. Heart Rhythm. 2008 Jan; 5(1):152-4. PMID: 18053771.
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    279. Bidart C, Vaseghi M, Cesario DA, Mahajan A, Fujimura O, Boyle NG, Shivkumar K. Radiofrequency current delivery via transseptal needle to facilitate septal puncture. Heart Rhythm. 2007 Dec; 4(12):1573-6. PMID: 17997362.
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    280. Buch E, Lellouche N, De Diego C, Vaseghi M, Cesario DA, Fujimura O, Wiener I, Child JS, Boyle NG, Shivkumar K. Left ventricular apical wall motion abnormality is associated with lack of response to cardiac resynchronization therapy in patients with ischemic cardiomyopathy. Heart Rhythm. 2007 Oct; 4(10):1300-5. PMID: 17905335.
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    281. Lellouche N, De Diego C, Akopyan G, Boyle NG, Mahajan A, Cesario DA, Wiener I, Shivkumar K. Changes and predictive value of dispersion of repolarization parameters for appropriate therapy in patients with biventricular implantable cardioverter-defibrillators. Heart Rhythm. 2007 Oct; 4(10):1274-83. PMID: 17905332.
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    282. Yang HM, Lai CK, Patel J, Moore J, Chen PS, Shivkumar K, Fishbein MC. Irreversible intrapulmonary vascular changes after pulmonary vein stenosis complicating catheter ablation for atrial fibrillation. Cardiovasc Pathol. 2007 Jan-Feb; 16(1):51-5. PMID: 17218215.
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    283. Cesario DA, Mahajan A, Shivkumar K. Lesion-forming technologies for catheter ablation of atrial fibrillation. Heart Rhythm. 2007 Mar; 4(3 Suppl):S44-50. PMID: 17336884.
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    284. Lellouche N, De Diego C, Cesario DA, Vaseghi M, Horowitz BN, Mahajan A, Wiener I, Boyle NG, Fonarow GC, Shivkumar K. Usefulness of preimplantation B-type natriuretic peptide level for predicting response to cardiac resynchronization therapy. Am J Cardiol. 2007 Jan 15; 99(2):242-6. PMID: 17223426.
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    285. Buch E, Vaseghi M, Cesario DA, Shivkumar K. A novel method for preventing phrenic nerve injury during catheter ablation. Heart Rhythm. 2007 Jan; 4(1):95-8. PMID: 17198999.
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    286. Cesario DA, Brar R, Shivkumar K. Alterations in ion channel physiology in diabetic cardiomyopathy. Endocrinol Metab Clin North Am. 2006 Sep; 35(3):601-10, ix-x. PMID: 16959588.
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    287. Vaseghi M, Shannon KM, Wetzel GT, Shivkumar K. Reentry around the heart. Heart Rhythm. 2007 Feb; 4(2):236-8. PMID: 17275765.
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    288. Horowitz BN, Vaseghi M, Mahajan A, Cesario DA, Buch E, Valderrábano M, Boyle NG, Ellenbogen KA, Shivkumar K. Percutaneous intrapericardial echocardiography during catheter ablation: a feasibility study. Heart Rhythm. 2006 Nov; 3(11):1275-82. PMID: 17074631.
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    289. Buch E, Cesario DA, Shivkumar K. The autonomic innervation of the ligament of Marshall. J Cardiovasc Electrophysiol. 2006 Jun; 17(6):600-1. PMID: 16836705.
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    290. Vaseghi M, Cesario DA, Mahajan A, Wiener I, Boyle NG, Fishbein MC, Horowitz BN, Shivkumar K. Catheter ablation of right ventricular outflow tract tachycardia: value of defining coronary anatomy. J Cardiovasc Electrophysiol. 2006 Jun; 17(6):632-7. PMID: 16836713.
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    291. Boyle NG, Shivkumar K. Arrhythmia diagnosis: simple and elegant. Heart Rhythm. 2006 Jun; 3(6):680-1. PMID: 16731469.
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    292. Cesario DA, Shenoda M, Brar R, Shivkumar K. Left ventricular lead stabilization utilizing a coronary stent. Pacing Clin Electrophysiol. 2006 Apr; 29(4):427-8. PMID: 16650274.
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    293. Cesario DA, Vaseghi M, Boyle NG, Fishbein MC, Valderrábano M, Narasimhan C, Wiener I, Shivkumar K. Value of high-density endocardial and epicardial mapping for catheter ablation of hemodynamically unstable ventricular tachycardia. Heart Rhythm. 2006 Jan; 3(1):1-10. PMID: 16399044.
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    294. Mahajan A, Moore J, Cesario DA, Shivkumar K. Use of thoracic epidural anesthesia for management of electrical storm: a case report. Heart Rhythm. 2005 Dec; 2(12):1359-62. PMID: 16360091.
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    295. Vaseghi M, Cesario DA, Valderrabano M, Boyle NG, Ratib O, Finn JP, Wiener I, Shivkumar K. Impedance monitoring during catheter ablation of atrial fibrillation. Heart Rhythm. 2005 Sep; 2(9):914-20. PMID: 16171742.
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    296. Shivkumar K. Pulmonary-vein cryoisolation versus left-atrial linear cryoablation for atrial fibrillation. Nat Clin Pract Cardiovasc Med. 2005 Sep; 2(9):446-7. PMID: 16265583.
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    297. Belikov S, Marijic J, Laks H, Staudacher M, Boyle N, Shivkumar K, Odim J. Sepsis from insidious pacemaker infection and unsuspected tricuspid valve endocarditis: the importance of transesophageal echocardiography in guiding explantation strategy. J Cardiothorac Vasc Anesth. 2005 Aug; 19(4):505-7. PMID: 16085259.
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    298. Glikson M, Swerdlow CD, Gurevitz OT, Daoud E, Shivkumar K, Wilkoff B, Shipman T, Friedman PA. Optimal combination of discriminators for differentiating ventricular from supraventricular tachycardia by dual-chamber defibrillators. J Cardiovasc Electrophysiol. 2005 Jul; 16(7):732-9. PMID: 16050831.
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    299. Vaseghi M, Cesario D, Swerdlow CD, Shivkumar K. Counterclockwise atrial flutter in dextrocardia. Heart Rhythm. 2005 Jun; 2(6):673-4. PMID: 15922281.
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    300. Cesario DA, Broder HJ, Fishbein MC, Shivkumar K. Histopathologic characterization of the atrioventricular conduction axis following catheter ablation. Heart Rhythm. 2005 May; 2(5):532-5. PMID: 15840481.
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    301. Vaseghi M, Cesario D, Shannon KM, Shivkumar K. Incessant tachycardia following catheter ablation of an accessory pathway: what is the mechanism? Heart Rhythm. 2005 Apr; 2(4):441-2. PMID: 15851349.
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    302. Vaseghi M, Cesario DA, Ji S, Shannon KM, Wiener I, Boyle NG, Fonarow GC, Valderrábano M, Shivkumar K. Beyond coronary sinus angiography: the value of coronary arteriography and identification of the pericardiophrenic vein during left ventricular lead placement. Pacing Clin Electrophysiol. 2005 Mar; 28(3):185-90. PMID: 15733176.
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    303. Pai RK, Boyle NG, Child JS, Shivkumar K. Transient left recurrent laryngeal nerve palsy following catheter ablation of atrial fibrillation. Heart Rhythm. 2005 Feb; 2(2):182-4. PMID: 15851295.
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    304. Shivkumar K, N Weiss J. The slippery slope of human ventricular arrhythmias. J Cardiovasc Electrophysiol. 2004 Dec; 15(12):1364-5. PMID: 15610279.
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    305. Bello D, Kipper S, Valderrábano M, Shivkumar K. Catheter ablation of ventricular tachycardia guided by contrast-enhanced cardiac computed tomography. Heart Rhythm. 2004 Oct; 1(4):490-2. PMID: 15851204.
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    306. Valderrábano M, Cesario DA, Ji S, Shannon K, Wiener I, Swerdlow CD, Oral H, Morady F, Shivkumar K. Percutaneous epicardial mapping during ablation of difficult accessory pathways as an alternative to cardiac surgery. Heart Rhythm. 2004 Sep; 1(3):311-6. PMID: 15851176.
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    307. Ji S, Cesario D, Valderrabano M, Shivkumar K. The molecular basis of cardiac arrhythmias in patients with cardiomyopathy. Curr Heart Fail Rep. 2004 Sep; 1(3):98-103. PMID: 16036032.
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    308. Shivkumar K, Valderrabano M. Use of potassium channel openers for pharmacologic modulation of cardiac excitability. J Cardiovasc Electrophysiol. 2004 Jul; 15(7):821-3. PMID: 15250870.
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    309. Cesario D, Bhargava M, Valderrábano M, Fonarow GC, Wilkoff B, Shivkumar K. Azygos vein lead implantation: a novel adjunctive technique for implantable cardioverter defibrillator placement. J Cardiovasc Electrophysiol. 2004 Jul; 15(7):780-3. PMID: 15250862.
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    310. Cesario DA, Valderrabano M, Cai JJ, Ji S, Shannon KM, Weiss JN, Wiener I, Olshansky B, Chen PS, Shivkumar K. Electrophysiological characterization of cardiac veins in humans. J Interv Card Electrophysiol. 2004 Jun; 10(3):241-7. PMID: 15133362.
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    311. Tede NH, Shivkumar K, Perloff JK, Middlekauff HR, Fishbein MC, Child JS, Laks H. Signal-averaged electrocardiogram in Ebstein's anomaly. Am J Cardiol. 2004 Feb 15; 93(4):432-6. PMID: 14969616.
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    312. Ji S, Cesario DA, Swerdlow CD, Shivkumar K. Left ventricular endocardial lead placement using a modified transseptal approach. J Cardiovasc Electrophysiol. 2004 Feb; 15(2):234-6. PMID: 15028056.
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    313. Swerdlow C, Shivkumar K, Zhang J. Determination of the upper limit of vulnerability using implantable cardioverter-defibrillator electrograms. Circulation. 2003 Jun 24; 107(24):3028-33. PMID: 12810611.
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    314. Shivkumar K. Mechanisms of arrhythmias: are we still "learning while burning"? (editorial). J Cardiovasc Electrophysiol. 2002 Apr; 13(4):393-4. PMID: 12033358.
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    315. Shivkumar K, Murali NS, Krishnan SC. The molecular basis of cardiac arrhythmias. J Nucl Cardiol. 2002 Mar-Apr; 9(2):206-14. PMID: 11986566.
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    316. Christenson SD, Olshansky B, Shivkumar K. Unusual response to atrial extrastimulus testing. J Cardiovasc Electrophysiol. 2002 Feb; 13(2):200. PMID: 11900302.
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    317. Jagasia DH, Shivkumar K. Carvedilol reduced mortality and morbidity caused by myocardial infarction in patients with left ventricular dysfunction. ACP J Club. 2002 Jan-Feb; 136(1):7. PMID: 11829548.
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