patients with an early peak mb ck more frequently presented with st segment depression ( 23 versus 11 % , p less than 0.01 ) , with anterior location of ischemia or infarction ( 71 versus 52 % , p less than 0.01 ) and with a lower mean left ventricular ejection fraction ( 41.4 versus 47.4 % , p less than 0.01 ) .
C0022116
ischemia
C0021308
infarction