Iqwal Mangat




Dr. Iqwal Mangat is an Assistant Professor of Medicine at the University of Toronto, and is a practicing cardiologist at St. Michael’s Hospital. He is currently the Director of the Arrhythmia Program at St. Michael’s Hospital. Dr. Mangat received his MD from the University of Toronto in 1993, and completed his Cardiology training at the University of Toronto in 1999. He completed training in Adult Cardiac Electrophysiology at the University of California, San Francisco in 2001, and was appointed Lecturer at UCSF from July 2001 to June 2002. Dr. Mangat returned to Toronto and joined the Division of Cardiology at St. Michael’s Hospital in October 2002. Dr. Mangat’s clinical and research interests include the following:

  • Evaluation and management of patients with syncope, palpitations, risk factors for sudden cardiac death
  • Arrhythmia management including supraventricular and ventricular tachycardias, inherited arrhythmic syndromes including RV dysplasia, long QT syndrome and Brugada syndrome
  • Special interest in atrial fibrillation, including novel therapeutic strategies and catheter ablation
  • Spearheaded the development of an Atrial Fibrillation Centre at St. Michael’s Hospital (July 2009) which is a rapid access centre for management of patients with atrial fibrillation, with a focus on patient education

Please note: Dr. Mangat is no longer taking any further summer students for this year.

Recent Publications

  1. Andrade, JG, Deyell, MW, Macle, L, Wells, GA, Bennett, M, Essebag, V et al.. Progression of Atrial Fibrillation after Cryoablation or Drug Therapy. N Engl J Med. 2023;388 (2):105-116. doi: 10.1056/NEJMoa2212540. PubMed PMID:36342178 .
  2. Tan, NS, Deva, DP, Connelly, KA, Angaran, P, Mangat, I, Jimenez-Juan, L et al.. Myocardial strain assessment using cardiovascular magnetic resonance imaging in recipients of implantable cardioverter defibrillators. J Cardiovasc Magn Reson. 2021;23 (1):115. doi: 10.1186/s12968-021-00806-4. PubMed PMID:34670574 PubMed Central PMC8529844.
  3. Urzua Fresno, CM, Folador, L, Shalmon, T, Hamad, FMD, Singh, SM, Karur, GR et al.. Prognostic value of cardiovascular magnetic resonance left ventricular volumetry and geometry in patients receiving an implantable cardioverter defibrillator. J Cardiovasc Magn Reson. 2021;23 (1):72. doi: 10.1186/s12968-021-00768-7. PubMed PMID:34108003 PubMed Central PMC8191093.
  4. Gong, IY, Yazdan-Ashoori, P, Jimenez-Juan, L, Tan, NS, Angaran, P, Chacko, BR et al.. Left atrial volume and function measured by cardiac magnetic resonance imaging as predictors of shocks and mortality in patients with implantable cardioverter-defibrillators. Int J Cardiovasc Imaging. 2021;37 (7):2259-2267. doi: 10.1007/s10554-021-02196-1. PubMed PMID:33646496 .
  5. Kumar, S, Davis, J, Thibault, B, Mangat, I, Coutu, B, Bennett, M et al.. Canadian Registry of Electronic Device Outcomes: remote monitoring outcomes in the Abbott battery performance alert-a multicentre cohort. Europace. 2021;23 (8):1319-1323. doi: 10.1093/europace/euab025. PubMed PMID:33608700 .
  6. Davis, J, Thibault, B, Mangat, I, Coutu, B, Bennett, M, Philippon, F et al.. Canadian Registry of Electronic Device Outcomes (CREDO): The Abbott ICD Premature Battery Depletion Advisory, a Multicentre Cohort Study. CJC Open. 2021;3 (1):48-53. doi: 10.1016/j.cjco.2020.09.008. PubMed PMID:33458632 PubMed Central PMC7801196.
  7. Andrade, JG, Wells, GA, Deyell, MW, Bennett, M, Essebag, V, Champagne, J et al.. Cryoablation or Drug Therapy for Initial Treatment of Atrial Fibrillation. N Engl J Med. 2021;384 (4):305-315. doi: 10.1056/NEJMoa2029980. PubMed PMID:33197159 .
  8. Andrade, JG, Champagne, J, Dubuc, M, Deyell, MW, Verma, A, Macle, L et al.. Cryoballoon or Radiofrequency Ablation for Atrial Fibrillation Assessed by Continuous Monitoring: A Randomized Clinical Trial. Circulation. 2019;140 (22):1779-1788. doi: 10.1161/CIRCULATIONAHA.119.042622. PubMed PMID:31630538 .
  9. Azizi-Namini, P, Ahmed, M, Yan, AT, Desjardins, S, Al-Hesayen, A, Mangat, I et al.. Prevalence of Thiamin Deficiency in Ambulatory Patients with Heart Failure. J Acad Nutr Diet. 2019;119 (7):1160-1167. doi: 10.1016/j.jand.2019.01.015. PubMed PMID:30928321 .
  10. Burstein, B, Barbosa, RS, Samuel, M, Kalfon, E, Philippon, F, Birnie, D et al.. Prevention of venous thrombosis after electrophysiology procedures: a survey of national practice. J Interv Card Electrophysiol. 2018;53 (3):357-363. doi: 10.1007/s10840-018-0461-9. PubMed PMID:30298364 .
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Affiliations & Other Activities

  • Director, Arrhythmia Service, St. Michael’s Hospital
  • Staff Cardiologist, St. Michael’s Hospital
  • Assistant Professor, Faculty of Medicine, University of Toronto