<prompt> The most sensitive and practical technique for detection of myocardial ischemia in the perioperative period is:Magnetic Resonance SpectroscopyRadio labeled lactate determinationDirect measurement of end diastolic pressureRegional wall motion abnormality detected with the help of 2D transoesophageal echocardio-graphy  <response>: D i.e. Regional wall motion abnormality detected with the help of 2D transoesophageal echocardiography 