echocardiographic evaluation of post mi patients with consistent st segment elevation who underwent angiography: a follow up study

Introduction: percutaneous coronary intervention (pci) is an accepted method of reperfusion in patients with acute st-segment elevation myocardial infarction (stemi). establishing coronary blood flow during angiography does not always result in the proper coronary circulation. there are many factors related to patient outcomes after pci. st-segment resolution (stsr) is one of these factors that can be achieved noninvasively and indicates reperfusion. however, the relationship between stsr and echocardiographic findings has not been widely studied. the present study aims to evaluate electrocardiogram (ecg) and echocardiography findings in post-stemi patients undergoing pci. materials and methods: a total of 340 patients who had stemi and underwent successful pci were selected by convenience sampling and participated in this follow-up study. after considering the exclusion criteria, 12-lead ecg was performed on each patient within 60 min, 90 min, 120 min, 24 h, and 2 months after pci. additionally, a transthoracic echocardiogram (tte) was performed after pci, and 2 additional ones were performed at 24 h and 2 months post-pci. st-segment resolution was evaluated in every ecg and the results were compared with the tte findings. results: the mean±sd for the time duration between the onset of symptoms and calling ems, the door-to-balloon time, and the time duration between the first medical staff visit and angioplasty were 114.4±56.63 min, 35.58±4.43 min, and 60.58±4.43 min, respectively. ejection fraction and end-systolic volume in patients with st-segment resolution greater than 30% at 60 min, 90 min, 120 min, and 24 h after pci were significantly higher than those with resolution lower than 30%. this finding was not observed two months after pci. conclusion: while delays in managing patients with stemi had favorable outcomes in our center despite similar studies, attempts should be made to reduce these delays. stsr greater than 30% at 90 and 120 min after successful pci is significantly related to higher ejection fractions and lower end-systolic volumes in patients with stemi. the patients are more likely to have low ejection fractions and high end-systolic volumes if the stsr occurs after 24 hours.