Richard D. Weisel, CM FRCSC[1] is a Canadian-American cardiovascular surgeon and a professor of surgery at University of Toronto. He is the current editor-in-chief of the Journal of Thoracic and Cardiovascular Surgery and the current director of the Cardiothoracic Surgical Trials Network.[2] He is known for demonstrating that volume loading during cardiac surgery improved stroke volume in patients post-operatively. He is also a researcher specializing in myocardial protection, cardiac regeneration and stem cells.[3][4]