* Intermediate-risk operations - Head-and-neck surgery - Abdominal surgery - Chest surgery - Orthopaedic surgery - Prostate surgery - Carotid endarterectomy (to clear blockage in the carotid artery).
[ACC/AHA Guideline Update on Perioperative Cardiovascular Evaluation for Noncardiac Surgery: A Report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee to Update the 1996 Guidelines on Perioperative Cardiovascular Evaluation for Noncardiac Surgery)]