<prompt> Most sensitive method of non invasive monitoring of cardio-vascular ischemia in perioperative period isNIBPECGPulse oximeterTEE  <response>: Two-dimensional TEE is the most sensitive method to detect myocardial ischemia and air embolism in peri-operative periodDetection of regional wall motion abnormality a rapid and more sensitive indicator of myocardial ischemia that is the ECG.Decreased systolic wall thickening may be more reliable index for ischemia than endocardial wall motion abnormality alone.Refer: Morgan and Mikhails Clinical Anaesthesiology, 5th edition, pg no.1211 