In 93 patients ( mean age , 60 11 years ) with first AMIs ( 55 with ST-segment elevation myocardial infarctions and 38 with non-ST-segment elevation myocardial infarctions ) treated with acute percutaneous coronary intervention , global peak longitudinal strain was determined to describe global function by STE , and peak systolic circumferential and longitudinal strain was determined for segmental function analysis .