2026 Kalyanam Shivkumar: Medicine Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Medicine	80	17049	16029	8551	7905	695	24981

Kalyanam Shivkumar publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Kalyanam Shivkumar sits on this spectrum.

101 publications 1,796+

This scientist: 695 publications — 80th percentile

80% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

Kalyanam Shivkumar D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Kalyanam Shivkumar sits on this spectrum.

70 D-Index 217+

This scientist: 80 D-Index — 16th percentile

16% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

Overview

Kalyanam Shivkumar is affiliated with the University of California, Los Angeles in the United States. Their research primarily focuses on the field of Medicine, with a specific emphasis on Cardiology and Cardiovascular Medicine. Within this broad area, Shivkumar has contributed extensively to subfields including Surgery, Radiology, Nuclear Medicine and Imaging, Neurology, and Molecular Biology.

The main topics of Shivkumar's work cover a range of aspects related to cardiac health and treatments. These include:

Cardiac Arrhythmias and Treatments
Cardiac electrophysiology and arrhythmias
Cardiac pacing and defibrillation studies
Atrial Fibrillation Management and Outcomes
Heart Rate Variability and Autonomic Control
Cardiac Valve Diseases and Treatments
Cardiovascular Syncope and Autonomic Disorders

Shivkumar has published in several frequent venues, reflecting the focus and impact of their work within cardiovascular medicine. These venues include:

Journal of the American College of Cardiology
Heart Rhythm
JACC. Clinical electrophysiology
JACC Case Reports
The Journal of Physiology

Among recent papers authored or co-authored by Shivkumar are:

"Innervation and Neuronal Control of the Mammalian Sinoatrial Node a Comprehensive Atlas," 2021, Circulation Research
"Non-invasive stereotactic body radiation therapy for refractory ventricular arrhythmias: an institutional experience," 2020, Journal of Interventional Cardiac Electrophysiology
"Neuroscientific therapies for atrial fibrillation," 2021, Cardiovascular Research
"Role of angiotensin-converting enzyme 2 and pericytes in cardiac complications of COVID-19 infection," 2020, American Journal of Physiology-Heart and Circulatory Physiology
"CLSTN3β enforces adipocyte multilocularity to facilitate lipid utilization," 2022, Nature

Frequent collaborators in Shivkumar's research include:

Shumpei Mori
Olujimi A. Ajijola
Jason S. Bradfield
Peter Hanna
Jeffrey L. Ardell

Best Publications

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

Sanjiv M. Narayan;David E. Krummen;David E. Krummen;Kalyanam Shivkumar;Paul Clopton

1532
Citations
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

Roderick Tung;Marmar Vaseghi;David S. Frankel;Pasquale Vergara

566
Citations
EHRA/HRS/APHRS expert consensus on ventricular arrhythmias

Christian Torp Pedersen;G. Neal Kay;Jonathan Kalman;Martin Borggrefe

480
Citations
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).

Sanjiv M. Narayan;Sanjiv M. Narayan;Tina Baykaner;Paul Clopton;Amir Schricker

464
Citations
The Role of the Autonomic Nervous System in Sudden Cardiac Death

Marmar Vaseghi;Kalyanam Shivkumar

457
Citations
Cardiac Innervation and Sudden Cardiac Death

Keiichi Fukuda;Hideaki Kanazawa;Yoshiyasu Aizawa;Jeffrey L. Ardell

375
Citations
Cardiac sympathetic denervation in patients with refractory ventricular arrhythmias or electrical storm: Intermediate and long-term follow-up

Marmar Vaseghi;Jean Gima;Christopher Kanaan;Olujimi A. Ajijola

371
Citations
Neuraxial Modulation for Refractory Ventricular Arrhythmias: Value of Thoracic Epidural Anesthesia and Surgical Left Cardiac Sympathetic Denervation

Tara Bourke;Marmar Vaseghi;Yoav Michowitz;Vineet Sankhla

345
Citations
Multicenter Outcomes for Catheter Ablation of Idiopathic Premature Ventricular Complexes

Rakesh Latchamsetty;Miki Yokokawa;Fred Morady;Hyungjin Myra Kim

323
Citations
EHRA/HRS/APHRS expert consensus on ventricular arrhythmias

Hannah Peachey;Christian Torp Pedersen;G. Neal Kay;Jonathan Kalman

322
Citations
The Cardiac Atlas Project—an imaging database for computational modeling and statistical atlases of the heart

Carissa G. Fonseca;Michael Backhaus;David A. Bluemke;Randall D. Britten

318
Citations
Ablation of ventricular arrhythmias in arrhythmogenic right ventricular dysplasia/cardiomyopathy: arrhythmia-free survival after endo-epicardial substrate based mapping and ablation.

Rong Bai;Luigi Di Biase;Luigi Di Biase;Kalyanam Shivkumar;Prasant Mohanty

317
Citations
Electrophysiology of Hypokalemia and Hyperkalemia

James N. Weiss;Zhilin Qu;Kalyanam Shivkumar

317
Citations
Clinical neurocardiology defining the value of neuroscience-based cardiovascular therapeutics

Kalyanam Shivkumar;Olujimi A. Ajijola;Inder Anand;J. Andrew Armour

317
Citations
Systemic AAV vectors for widespread and targeted gene delivery in rodents.

Rosemary C. Challis;Sripriya Ravindra Kumar;Ken Y. Chan;Collin Challis

310
Citations
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).

Sanjiv M. Narayan;Sanjiv M. Narayan;Sanjiv M. Narayan;David E. Krummen;Paul Clopton;Kalyanam Shivkumar

294
Citations
Cardiac Sympathetic Denervation for Refractory Ventricular Arrhythmias

Marmar Vaseghi;Parag Barwad;Federico J. Malavassi Corrales;Harikrishna Tandri

281
Citations
Characterization of the arrhythmogenic substrate in ischemic and nonischemic cardiomyopathy implications for catheter ablation of hemodynamically unstable ventricular tachycardia.

Shiro Nakahara;Roderick Tung;Rafael J. Ramirez;Yoav Michowitz

271
Citations
Autonomic Nervous System Dysfunction: JACC Focus Seminar

Jeffrey J. Goldberger;Rishi Arora;Una Buckley;Kalyanam Shivkumar

234
Citations
EHRA/HRS/APHRS expert consensus on ventricular arrhythmias

Christian Torp Pedersen;G. Neal Kay;Jonathan Kalman;Martin Borggrefe

5
Citations

Frequent Co-Authors

Luigi Di Biase Albert Einstein College of Medicine

Michael C. Fishbein University of California, Los Angeles

Andrea Natale Case Western Reserve University

Matthew O'Donnell University of Washington

William G. Stevenson Vanderbilt University Medical Center

Francis E. Marchlinski University of Pennsylvania

Omer Oralkan North Carolina State University

David J. Callans University of Pennsylvania

Kevin Shannon University of California, San Francisco

Alan H. Kadish Touro College

External Links

Personal website of Kalyanam Shivkumar

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