This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fundamental Concepts, Subject name: Anaesthesia
Most sensitive method of non invasive monitoring of cardio-vascular ischemia in perioperative period is - 
Select and explain. 
A. NIBP, B. BOG, C. Pulse oximeter, D. TEE
D: TEE
Answer: D: TEE 
Explanation: Ans. is 'd' i.e., TEE o Two dimensional TEE is the most sensitive method to detect myocardial ischemia and air embolism in peri-operative period.o Detection of regional w all motion abnormality a rapid and more sensitive indicator of myocardial ischemia than is the ECGo Decreased systolic wall thickening may be more reliable index for ischemia than endocardial wall motion abnormality alone.