Practice Level 3 Case 31: A 77-Year-Old Man in the Emergency Department History Diagnosis ECG 2 ECG 2 Diagnosis History A 77-year-old man is presenting to the emergency department for episodes of severe weakness and near-syncope during the past 24 hours: Diagnosis Atrial flutter with complete heart blockEscape wide QRS rhythm, with right bundle branch block patternVentricular rate 30/min ECG 2 A pacemaker is implanted: ECG 2 Diagnosis VVI Pacing Underlying coarse atrial fibrillation, with paced ventricular rhythm, rate 70/min ECG ID: E562 Bookmark Please login to bookmark Username or Email Address Password Remember Me No account yet? Register