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E. Downar · SciRah

Researcher profile · Semantic Scholar

E. Downar

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E. Downar — researcher profile on SciRah

h-index: 37
Works: 168
Citations: 5,259

Most-cited papers

Sustained ventricular tachycardia in adult patients late after repair of tetralogy of Fallot.
D. A. Harrison, L. Harris, S. Siu, Cynthia J MacLoghlin +5 more
1997Journal of the American College of Cardiology278 citations Open access
Semantic Scholar
Reoperation in adults with repair of tetralogy of fallot: indications and outcomes.
E. Oechslin, D. A. Harrison, L. Harris, E. Downar +3 more
1999Journal of Thoracic and Cardiovascular Surgery274 citations Open access
Semantic Scholar
Multicenter Study of Ischemic Ventricular Tachycardia Ablation With Decrement-Evoked Potential (DEEP) Mapping With Extra Stimulus.
Andreu Porta-Sánchez, N. Jackson, P. Lukac, S. Kristiansen +9 more
2018JACC Clinical Electrophysiology143 citations Open access
Semantic Scholar
Optical mapping of Langendorff-perfused human hearts: establishing a model for the study of ventricular fibrillation in humans.
K. Nanthakumar, J. Jalife, S. Massé, E. Downar +9 more
2007American Journal of Physiology. Heart and Circulatory Physiology136 citations
Semantic Scholar
Outcome of intra-atrial re-entrant tachycardia catheter ablation in adults with congenital heart disease: negative impact of age and complex atrial surgery.
S. Yap, L. Harris, C. Silversides, E. Downar +1 more
2010Journal of the American College of Cardiology132 citations Open access
Semantic Scholar
Outcomes after late reoperation in patients with repaired tetralogy of Fallot: the impact of arrhythmia and arrhythmia surgery.
T. Karamlou, I. Silber, Robin Lao, B. McCrindle +6 more
2006Annals of Thoracic Surgery123 citations Open access
Semantic Scholar
Decrement Evoked Potential Mapping: Basis of a Mechanistic Strategy for Ventricular Tachycardia Ablation
N. Jackson, S. Gizurarson, K. Viswanathan, B. King +11 more
2015Circulation: Arrhythmia and Electrophysiology113 citations Open access
Semantic Scholar
Cardiac electrophysiological consequences of neuromuscular incapacitating device discharges.
K. Nanthakumar, Ian M. Billingsley, S. Massé, P. Dorian +4 more
2006Journal of the American College of Cardiology110 citations Open access
Semantic Scholar
Increased ventricular repolarization heterogeneity in patients with ventricular arrhythmia vulnerability and cardiomyopathy: a human in vivo study.
V. Chauhan, E. Downar, K. Nanthakumar, J. Parker +3 more
2006American Journal of Physiology. Heart and Circulatory Physiology104 citations
Semantic Scholar
Ventricular fibrillation in myopathic human hearts: mechanistic insights from in vivo global endocardial and epicardial mapping.
S. Massé, E. Downar, V. Chauhan, E. Sevaptsidis +1 more
2007American Journal of Physiology. Heart and Circulatory Physiology101 citations
Semantic Scholar
Thrombogenicity of radiofrequency ablation procedures: what factors influence thrombin generation?
D. Lee, P. Dorian, E. Downar, M. Burns +5 more
2001Europace77 citations Open access
Semantic Scholar
Evolving Electroanatomic Substrate and Intra‐Atrial Reentrant Tachycardia Late After Fontan Surgery
S. Yap, L. Harris, E. Downar, K. Nanthakumar +2 more
2012Cardiovascular Electrophysiology68 citations
Semantic Scholar
Coronary venous oximetry using MRI
Warren D. Foltz, N. Merchant, E. Downar, Jeff A. Stainsby +1 more
1999Magnetic Resonance in Medicine53 citations Open access
Semantic Scholar
Bipolar ablation for deep intra-myocardial circuits: human ex vivo development and in vivo experience.
S. Gizurarson, D. Spears, G. Sivagangabalan, T. Farid +8 more
2014Europace50 citations Open access
Semantic Scholar
Electrogram fractionation in murine HL-1 atrial monolayer model.
K. Umapathy, S. Massé, Karolina M. Kolodziejska, G. Veenhuyzen +6 more
2008Heart Rhythm45 citations
Semantic Scholar
Cardiorespiratory Effects of Concentrated Ambient PM2.5: A Pilot Study Using Controlled Human Exposures
S. Petrovic, B. Urch, J. Brook, J. Datema +11 more
200043 citations
Semantic Scholar
Relationship of bipolar and unipolar electrogram voltage to scar transmurality and composition derived by magnetic resonance imaging in patients with nonischemic cardiomyopathy undergoing VT ablation.
D. Spears, A. Suszko, Rupin Dalvi, A. Crean +4 more
2012Heart Rhythm42 citations
Semantic Scholar
A Comparison of Unipolar and Bipolar Electrodes During Cardiac Mapping Studies
S. Kimber, E. Downar, S. Massé, E. Sevaptsidis +3 more
1996Pacing and clinical electrophysiology : PACE31 citations
Semantic Scholar
Electroanatomical mapping–guided stereotactic radiotherapy for right ventricular tachycardia storm
A. Bhaskaran, E. Downar, V. Chauhan, P. Lindsay +4 more
2019HeartRhythm Case Reports24 citations Open access
Semantic Scholar
Direct and Indirect Mapping of Intramural Space in Ventricular Tachycardia.
A. Bhaskaran, S. Nayyar, Andreu Porta-Sánchez, C. Jøns +8 more
2020Heart Rhythm20 citations
Semantic Scholar
Intraoperative high-density global mapping in adult-repaired tetralogy of fallot altered left ventricular and right ventricular activation and implications for resynchronization strategies.
K. Nanthakumar, S. Massé, Kwaku Poku, C. Silversides +6 more
2010Journal of the American College of Cardiology19 citations Open access
Semantic Scholar
Role of amiodarone in the management of atrial arrhythmias in adult Fontan patients
S. Kawada, Praloy Chakraborty, Lucy S Roche, E. Oechslin +12 more
2020Heart17 citations
Semantic Scholar
Exit sites on the epicardium rarely subtend critical diastolic path of ischemic VT on the endocardium: Implications for noninvasive ablation
A. Bhaskaran, S. Nayyar, Andreu Porta-Sánchez, S. Haldar +7 more
2019Cardiovascular Electrophysiology15 citations
Semantic Scholar
Electrophysiologic surgery in patients with congenital heart disease.
D. A. Ashburn, L. Harris, E. Downar, S. Siu +2 more
2003Seminars in Thoracic and Cardiovascular Surgery Pediatric Cardiac Surgery Annual14 citations
Semantic Scholar
Short-Term Memory and Restitution During Ventricular Fibrillation in Human Hearts: An In Vivo Study
Satish C. Toal, T. Farid, R. Selvaraj, V. Chauhan +6 more
2009Circulation: Arrhythmia and Electrophysiology13 citations Open access
Semantic Scholar
Epicardial Catheter Ablation of Incessant Ventricular Tachycardia in Giant Cell Myocarditis
Vijay S. Chauhan, Imad Hameedullah, K. Nanthakumar, E. Downar
2008Cardiovascular Electrophysiology11 citations
Semantic Scholar
Aborted sudden death from sustained ventricular fibrillation.
K. Nair, K. Umapathy, E. Downar, K. Nanthakumar
2008Heart Rhythm11 citations
Semantic Scholar
Stimulation and Propagation of Activation in Conduction Tissue: Implications for Left Bundle Branch Area Pacing.
A. Niri, A. Bhaskaran, J. Asta, S. Massé +5 more
2021Heart Rhythm10 citations
Semantic Scholar
The Role of Ablation in Prevention of Recurrent Implantable Cardioverter Defibrillator Shocks in Patients With Tetralogy of Fallot
S. Kawada, Praloy Chakraborty, E. Downar, A. Sánchez +17 more
2021CJC Open10 citations Open access
Semantic Scholar
Exploring the cause of conduction delays in patients with repaired Tetralogy of Fallot.
Nienke J Verzaal, S. Massé, E. Downar, K. Nanthakumar +2 more
2021Europace9 citations Open access
Semantic Scholar
Case report: Ablation of diffuse inter-trabecular substrate in a patient with isolated ventricular non-compaction
N. Jackson, B. King, K. Viswanathan, E. Downar +1 more
2015Indian Pacing and Electrophysiology Journal9 citations Open access
Semantic Scholar
Unusual Intraatrial Reentry Following the Mustard Procedure Defined by Multisite Magnetic Electroanatomic Mapping
R. Sardana, Vijay S. Chauhan, E. Downar
2003Pacing and clinical electrophysiology : PACE9 citations
Semantic Scholar
The rationale for repurposing funny current inhibition for management of ventricular arrhythmia.
Praloy Chakraborty, R. Rose, K. Nair, E. Downar +1 more
2020Heart Rhythm8 citations
Semantic Scholar
Temporal-component analysis of diastolic electrograms in ventricular tachycardia differentiates nonvulnerable regions of the circuit.
M. Das, E. Downar, S. Massé, L. Harris +7 more
2015Heart Rhythm8 citations
Semantic Scholar
Characteristics of Local Electrograms with Diastolic Potentials: Identification of Different Components of Return Pathways in Ventricular Tachycardia
J. Saito, E. Downar, J. Doig, S. Massé +6 more
1998Journal of interventional cardiac electrophysiology8 citations
Semantic Scholar
Health Care Utilization After Ventricular Tachycardia Ablation: A Propensity Score-Matched Cohort Study.
Andreu Porta-Sánchez, A. Ha, Xuesong Wang, Fahad Almehmadi +8 more
2019Canadian Journal of Cardiology7 citations
Semantic Scholar
Wave similarity of human ventricular fibrillation from bipolar electrograms.
S. Massé, E. Downar, V. Chauhan, E. Sevaptsidis +1 more
2007Europace7 citations Open access
Semantic Scholar
Radiofrequency Catheter Ablation of a Posteroseptal Accessory Pathway along the Morphologic Tricuspid Valve in a Patient with Congenitally Corrected Transposition of the Great Arteries and Complete Atrioventricular Block
P. Shah, A. Dwivedi, E. Downar, M. Waxman +1 more
2004Journal of interventional cardiac electrophysiology7 citations
Semantic Scholar
Signature Signal Strategy: Electrogram Based Ventricular Tachycardia Mapping Nayyar et al. Signature electrogram based VT ablation.
S. Nayyar, E. Downar, A. Bhaskaran, S. Massé +1 more
2020Heart Rhythm6 citations
Semantic Scholar
Lateral tunnel Fontan atrial tachycardia ablation trans-baffle access is not mandatory as the initial strategy
A. Bhaskaran, S. Nayyar, P. Charla, Yawer Saeed +13 more
2019Journal of interventional cardiac electrophysiology6 citations
Semantic Scholar
Magnetoelectroanatomic Mapping of Arrhythmias in Structural Heart Disease Using a Novel Multielectrode Catheter:
Vijay S. Chauhan, G. Nair, Elias Sevaptisidis, E. Downar
2004Pacing and clinical electrophysiology : PACE6 citations
Semantic Scholar
Information theory to tachycardia therapy: electrogram entropy predicts diastolic microstructure of reentrant ventricular tachycardia.
S. Nayyar, E. Downar, M. Beheshti, T. Liang +6 more
2019American Journal of Physiology. Heart and Circulatory Physiology5 citations
Semantic Scholar
Safety and long-term outcomes of defibrillator therapy in patients with right-sided implantable cardiac devices in adults with congenital heart disease.
S. Kawada, Praloy Chakraborty, Lisa Albertini, A. Bhaskaran +13 more
2020Canadian Journal of Cardiology4 citations
Semantic Scholar
Transbaffle Multielectrode Mapping of Atrial Flutter Post‐Double Switch Operation
S. Haldar, Andreu Porta-Sánchez, E. Oechslin, E. Downar +2 more
2016Cardiovascular Electrophysiology4 citations
Semantic Scholar
Role of Purkinje‒muscle junction in early ventricular fibrillation in a porcine model: Beyond the trigger concept
R. Anderson, S. Massé, J. Asta, P. Lai +4 more
2022Pacing and clinical electrophysiology : PACE3 citations
Semantic Scholar
Progress in catheter ablation : clinical application of new mapping and ablation technology
L. Liem, E. Downar
20013 citations
Semantic Scholar
Progress in Catheter Ablation
L. Liem, E. Downar
2001Developments in Cardiovascular Medicine3 citations Open access
Semantic Scholar
Microvolt Activation Alternans Identifies Conduction Velocity Heterogeneity and the Entrance Site of Ischemic Ventricular Tachycardia.
N. Denham, A. Suszko, M. Nemaire, A. Bhaskaran +6 more
2025JACC Clinical Electrophysiology2 citations Open access
Semantic Scholar
Utility of Substrate Mapping Using Extra-systole to Localize Comprehensive Ventricular Tachycardia Circuits - Results from Intra-Operative Mapping Studies.
Maroosh Mumtaz, E. Downar, S. Kawada, Melanie Zammit-Burg +7 more
2023Canadian Journal of Cardiology2 citations
Semantic Scholar
High density intramural mapping of post‐infarct premature ventricular contractions and ventricular tachycardia
E. Downar, M. Janse, A. Bhaskaran, A. Niri +3 more
2021Pacing and clinical electrophysiology : PACE2 citations Open access
Semantic Scholar

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K. Nanthakumar×32
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L. Harris×15
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