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 sensitive and practical technique for detection of myocardial ischemia in the perioperative period is: 
Select and explain. 
A. Magnetic Resonance Spectroscopy, B. Radio labeled lactate determination, C. Direct measurement of end diastolic pressure, D. Regional wall motion abnormality detected with the help of 2D transoesophageal echocardio-graphy
D: Regional wall motion abnormality detected with the help of 2D transoesophageal echocardio-graphy
Answer: D: Regional wall motion abnormality detected with the help of 2D transoesophageal echocardio-graphy 
Explanation: D i.e. Regional wall motion abnormality detected with the help of 2D transoesophageal echocardiography