Hypertrophic Cardiomyopathy Arrhythmias By L Brent Mitchell, MD, Libin Cardiovascular Institute of Alberta, University of Calgary Reviewed / Revised Jan 2023 View Patient Education Diagnosis Treatment Key Points Any hypertrophic cardiomyopathy can produce cardiac and systemic factors that predispose to arrhythmias, including bradyarrhythmias, atrial and ventricular tachyarrhythmias, and sudden death, and eventually end-stage dilated cardiomyopathy.