Practice Level 4 Case 90: A 50 Year-Old Man in the Cardiac ICU History Diagnosis History A 50-year-old man, who had a myocardial infarction 6 months ago, is in the cardiac intensive care unit one day after aorto-coronary bypass: Diagnosis Sinus bradycardia Sino-Atrial Block (Mobitz I second degree AV block) Inferior infarction ECG ID: E395 Bookmark Please login to bookmark Username or Email Address Password Remember Me No account yet? Register