Dr. Ratika Parkash is an outcomes and clinical trials researcher in atrial fibrillation and cardiac implantable electrical devices. Dr. Parkash was previously Chair of the Canadian Heart Rhythm Society Device Committee and, as such, led research on Riata (St Jude Medical) in Canada. The retrospective survey on Riata was accepted for publication in Heart Rhythm in 2013.

Dr. Parkash is the principle investigator and main author of Atrial Substrate Modification With Aggressive Blood Pressure Lowering to Prevent AF, a CIHR-funded, multi center clinical trial examining the use of aggressive blood pressure lowering in patients undergoing catheter ablation for atrial fibrillation. She is also co-investigator of IMPACT-AF.