This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
[{'content': 'The most common cause of morbidity and moality in patients undergoing major vascular surgery is: \nSelect and explain. \nA. Renal complications, B. Thrombo embolic phenomenon, C. Coagulopathies, D. Cardiac complications', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Cardiac Complication Myocardial peiformanceQ is the single most impoant determinant outcome following a major vascular operation. Non fatal and fatal MIsQ are the most impoant & specific outcomes that determine per operative cardiac morbidity in a patient undergoing vascular surgery. The dominant risk factor for perioperative morbidity & moatity in patients scheduled for abdominal aoic aneurysmectomy is found to be - cardiac (47%) > pulmonary (31%)Q > age older than 85 years (17%) > Renal failure (2%) > Retroperitoneal fibrosis (2%) > Cirhosis with ascites (1%)', 'role': 'assistant'}]