Clinical assessment for the benefits of delayed percutaneous transluminal coronary intervention in patients with acute myocardial infarction

Objectives To assess the clinical effect of routine delayed percutaneous coronary intervention(PCI)in patients with acute myocardial infarction(AMI). Methods Fifty-six patients with ST-segment elevation myocardial infarction(SETMI)who underwent delayed PCI(PCI group) and 47 patients with STEMI who were given conservative strategy(control group) were enrolled in this study and were compared in major adverse clinical events and cardiac structure and function by echocardiography during hospitalized period and followed-up 6-month. Results During follow-up period, the left ventricular end-diastolic volumes index (LVEDVI), left ventricular end-systolic volume index (LVESVI), left ventricular ejection fraction (LVEF), left ventricular wall motion score index (WMSI) and the total recover rate for the abnormal movement of the ventricle segments were significantly improved in the PCI group(P0.05). The occurrence rates of adverse cardiac events in the PCI group were less than those in the control group after 6 months(P0.05). Conclusions Delayed PCI can inhibit the late phase left ventricular remodeling and improve left ventricular function.