<prompt> ST elevation is seen in all of the following conditions except :Myocardial infarctionCoronary aery spasmConstrictive pericarditisVentricular aneurysm  <response>: Answer is C Constrictive pericarditis ST segment is measured from the end of QRS complex to the beginning of the T wave, and represents the time interval between ventricular depolarization and repolarization. 