Practice Level 2 Case 35: A 51-Year-Old Man in the Pre-operative Clinic History Diagnosis History A 51-year-old man scheduled to undergo a cholecystectomy in the pre-operative clinic has the following recorded ECG: Diagnosis Sinus Rhythm, 90/minNormal ECG ECG ID: E219 Bookmark Please login to bookmark Username or Email Address Password Remember Me No account yet? Register