Dr. Welsh’s research interests include:
Acute coronary syndromes and interventional cardiology
Valvular heart disease
Atherosclerotic cardiovascular disease
Cardiovascular disease and diabetes
Exercise physiology and cardiac physiology
Pre-hospital management of ST-elevation myocardial infarction, and the interaction of pharmacological (antithrombotic and fibrinolytic) and mechanical interventions (primary and rescue angioplasty)

He is Edmonton Zone Clinical Department Head, Cardiac Sciences; Co-chair of Vital Heart Response (STEMI regional reperfusion program) and the Mazankowski Alberta Heart Institute Transcatheter Aortic Valve Implantation program (TAVI).

Clinical research interests are focused on the management of the full spectrum of Acute Coronary Syndromes and Interventional Cardiology. Further research interests include: Diabetes Mellitus and cardiac physiology. He has published over 175 peer reviewed articles, multiple book chapters and greater than 150 scientific abstracts. In collaboration with colleagues he has received a Canadian Institute of Health Research-Canadian Medical Association Journal Top Canadian Achievements in Health Research Award. He is a faculty member at the Canadian VIGOUR Centre focused on collaborative regional, national and international research. He is currently on the executive or steering committee of 5 international trials and co-chairs a research adjudication committee.