Paul Dorian


Scientist, Keenan Research Centre for Biomedical Science

Research Programs


Please note: Dr. Dorian is not taking any summer students.

Dr. Paul Dorian is the Department Director, Division of Cardiology, University of Toronto and Staff Cardiac Electrophysiologist at St. Michael’s Hospital. He is Professor of Medicine in the Division of Cardiology and in the Division of Clinical Pharmacology at the University of Toronto, and a Staff Scientist at the Li Ka Shing Knowledge Institute.

Dr. Dorian received his medical degree from McGill University in Montreal in 1976. He continued training in Internal Medicine and Cardiology at the University of Toronto, and received certification by the Royal College of Physicians and Surgeons of Canada in Internal Medicine in 1983 and certification in Cardiology in 1984. He completed training in Clinical Pharmacology at the University of Toronto in 1982, and received an MSc in Pharmacology from the University of Toronto in 1982. From 1983 to 1985, he completed a Fellowship in Cardiac Electrophysiology at Stanford University Medical Centre in California.

His research interests include basic science research in advanced cardiac life support and atrial fibrillation, the clinical pharmacology of antiarrhythmic drugs, and clinical research on implanted devices, antiarrhythmic drugs, and quality of life in patients with arrhythmias.

He is the immediate Past-President of the Canadian Heart Rhythm Society, Chairman of the Cardiac Arrest Committee, St. Michael’s Hospital, Co-Principle Investigator on the National Institutes of Health funded Resuscitation Outcomes Consortium, and serves on the steering committee of multiple multicenter clinical trials in arrhythmia care. He is the Chair of the Canadian Cardiovascular Society Quality Committee.

He has published over 350 peer reviewed papers and is Associate Editor of the textbook Electrophysiological Disorders of the Heart.


Recent Publications

  1. Weissler-Snir, A, Dorian, P. Response by Weissler-Snir and Dorian to Letter Regarding Article, "Hypertrophic Cardiomyopathy-Related Sudden Cardiac Death in Young People in Ontario". Circulation. 2020;141 (13):e703-e704. doi: 10.1161/CIRCULATIONAHA.120.045962. PubMed PMID:32223681 .
  2. Elsokkari, I, Parkash, R, Tang, A, Wells, G, Doucette, S, Yetisir, E et al.. Mortality Risk Increases With Clustered Ventricular Arrhythmias in Patients With Implantable Cardioverter-Defibrillators. JACC Clin Electrophysiol. 2020;6 (3):327-337. doi: 10.1016/j.jacep.2019.11.012. PubMed PMID:32192684 .
  3. Moulson, N, Dorian, P, Krahn, A, Virani, A, Isserow, S, McKinney, J et al.. Shared Decision Making and the Cardiovascular Care of Athletes: Is It Time to Get Back in the Game?. Can J Cardiol. 2019; :. doi: 10.1016/j.cjca.2019.10.013. PubMed PMID:32173054 .
  4. Angaran, P, Dorian, P, Ha, ACT, Thavendiranathan, P, Tsang, W, Leong-Poi, H et al.. Association of Left Ventricular Ejection Fraction with Mortality and Hospitalizations. J Am Soc Echocardiogr. 2020; :. doi: 10.1016/j.echo.2019.12.016. PubMed PMID:32164977 .
  5. Allan, K, Dorian, P, Lin, S, C-SCAN Investigators. Developing a Pan-Canadian Registry of Sudden Cardiac Arrest: Challenges and Opportunities. CJC Open. 2019;1 (2):53-61. doi: 10.1016/j.cjco.2019.01.005. PubMed PMID:32159084 PubMed Central PMC7063603.
  6. Cheskes, S, Dorian, P, Feldman, M, McLeod, S, Scales, DC, Pinto, R et al.. Double sequential external defibrillation for refractory ventricular fibrillation: The DOSE VF pilot randomized controlled trial. Resuscitation. 2020; :. doi: 10.1016/j.resuscitation.2020.02.010. PubMed PMID:32084567 .
  7. Allan, KS, Ray, JG, Gozdyra, P, Morrison, LJ, Kiss, A, Buick, JE et al.. High risk neighbourhoods: The effect of neighbourhood level factors on cardiac arrest incidence. Resuscitation. 2020;149 :100-108. doi: 10.1016/j.resuscitation.2020.02.002. PubMed PMID:32068027 .
  8. Wald, R, Dorian, P, Harel, Z. Benefits and Risks of Anticoagulation in Dialysis Patients With Nonvalvular Atrial Fibrillation: Navigating Through Darkness. J. Am. Coll. Cardiol. 2020;75 (3):286-288. doi: 10.1016/j.jacc.2019.11.033. PubMed PMID:31976866 .
  9. AlTurki, A, Marafi, M, Proietti, R, Cardinale, D, Blackwell, R, Dorian, P et al.. Major Adverse Cardiovascular Events Associated With Postoperative Atrial Fibrillation After Noncardiac Surgery: A Systematic Review and Meta-Analysis. Circ Arrhythm Electrophysiol. 2020;13 (1):e007437. doi: 10.1161/CIRCEP.119.007437. PubMed PMID:31944855 .
  10. Daya, MR, Leroux, BG, Dorian, P, Rea, TD, Newgard, CD, Morrison, LJ et al.. Survival After Intravenous Versus Intraosseous Amiodarone, Lidocaine, or Placebo in Out-of-Hospital Shock-Refractory Cardiac Arrest. Circulation. 2020;141 (3):188-198. doi: 10.1161/CIRCULATIONAHA.119.042240. PubMed PMID:31941354 PubMed Central PMC7009320.
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Affiliations & Other Activities

  • Staff Cardiac Electrophysiologist, St. Michael’s Hospital
  • Professor, Medicine and Cardiology, St. Michael’s Hospital, University of Toronto
  • Director, Division of Cardiology, University of Toronto