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Sinai Health System - Mount Sinai


Clinician Scientist


Associate Professor

Dr. Susanna Mak is an associate professor in the Department of Medicine’s Division of Cardiology. She is the Director of the Anna Prosserman Heart Function Clinic and also the Director of the Harold & Esther Mecklinger and the Posluns Family Cardiac Catheterization Research Laboratory at Mount Sinai Hospital. In this facility, Dr. Mak performs her studies of cardiovascular physiology, as well as specialized investigations for advanced heart failure patients. As a clinical cardiologist, she is a heart failure specialist at the Anna Prosserman Heart Function Clinic, which is the longest serving Heart Failure Clinic in Toronto. Dr. Mak received her PhD from the Institute of Medical Sciences at the University of Toronto and is an expert in the assessment of hemodynamics and heart chamber function in humans. Dr. Mak’s research interests include the contrasts between the cardiovascular physiology of men and women, the pathophysiology of pulmonary arterial hypertension and heart failure, and the quality of care for patients with acute and chronic heart failure.

Dr. Mak has recently launched a clinical research program to precisely phenotype the cardiovascular physiologic contributions to dyspnea. Known as the BREATH (Breathlessness Revealed using Exercise to Assess The Hemodynamic response) program, Dr. Mak has received funding from the Heart and Stroke Foundation of Canada, the Canadian Institutes for Health Research and the Ontario Research Fund. The program aims to provide state of the art diagnostics for syndromes of breathlessness related to aging, heart failure with preserved ejection fraction and pulmonary hypertension.