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
The most common cause of morbidity and mortality in patients undergoing major vascular surgery is – 
Select and explain. 
A. Renal complications, B. Thromboembolic phenomenon, C. Coagulopathies, D. Cardiac complications
D: Cardiac complications
Answer: D: Cardiac complications 
Explanation: "Myocardial performance is the single most important determinant of outcome following a major vascular operation. "
"Non fatal and fatal MIs are the most important and specific outcomes that determine perioperative cardiac morbidity in patient for vascular surgery."