Comparison of Electrocardiogram Characteristics and adverse Events during PCI in Patients with ST-segment Elevation myocardial Infarction and non-ST-segment Elevation myocardial Infarction
Objective To compare the electrocardiogram characteristics and adverse events of patients with ST-segment elevation myocardial infarction(STEMI)and non-ST-segment elevation myocardial infarction(NSTEMI)undergoing percutaneous coronary intervention(PCI).Methods A total of 126 patients with myocardial infarction(MI)who underwent PCI treatment at People's Hospital of Hebi City from April 2020 to August 2022 were selected.All patients underwent electrocardiogram examination,and STEMI patients were selected as the STEMI group(n=66),while NSTEMI patients were selected as the NSTEMI group(n=60).The electrocardiogram characteristics,adverse events,heart function,laboratory examination results,and coronary artery disease situation during PCI were compared between the two groups.Results The Tp-Te interval(Tp-Tec)and QT interval(QTc)in the STEMI group were longer than those in the NSTEMI group,with more ST-segment depression leads and greater ST-segment depression amplitude,and the differences were statistically significant(P＜0.05);The incidence of arrhythmia during PCI in the STEMI group(30.30%)was higher than that in the NSTEMI group(10.00%),and the difference was statistically significant(P＜0.05);There was no statistically significant difference in left ventricular end diastolic volume(LVEDV)between the two PCI groups(P＞0.05).The STEMI group had a lower left ventricular ejection fraction(LVEF)during PCI compared to the NSTEMI group,and a higher PCI heart rate(HR),with a statistically significant difference(P＜0.05);The levels of cardiac troponin T(cTnT)and creatine kinase MB(CK-MB)in the STEMI group were higher than those in the NSTEMI group,and the differences were statistically significant(P＜0.05);The STEMI group had a higher incidence of single vessel coronary artery disease compared to the NSTEMI group,and a lower incidence of three vessel disease,with a statistically significant difference(P＜0.05).Conclusion During the process of PCI treatment for MI patients,STEMI patients have more obvious abnormalities in electrocardiogram and laboratory tests,are more prone to intraoperative adverse events,and are more common in single branch coronary artery lesions,with more severe cardiac dysfunction.
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