Practice Level 3 Case 57: A 72-Year-Old Woman with Cardiomyopathy History Diagnosis History A 72-year-old woman with a longstanding history of cardiomyopathy is seen in the emergency department for dyspnea: Diagnosis Ectopic atrial rhythm, 65/minLeft bundle branch block ECG ID: E418 Bookmark Please login to bookmark Username or Email Address Password Remember Me No account yet? Register