The Relationship between Changes in Electrocardiogram ST-T and Prognosis of Emergency Per-cutaneous Coronary Intervention in Patients with Acute Myocardial Infarction
The Relationship between Changes in Electrocardiogram ST-T and Prognosis of Emergency Per-cutaneous Coronary Intervention in Patients with Acute Myocardial Infarction
[Objective]To investigate the relationship between the changes of ST-T segment in electrocar-diogram and the prognosis of patients with acute myocardial infarction(AMI)undergoing emergency percuta-neous coronary intervention(PCI).[Methods]A total of 244 patients with AMI who underwent PCI treatment in our hospital were followed up for 6 months.According to the prognosis,they were divided into a poor prog-nosis group and a good prognosis group,Electrocardiographic monitoring was used to record the ST-T eleva-tion before surgery and the degree of ST-T drop at 1 hour and 24 hours after surgery.The risk factors affecting prognosis were analyzed.The predictive value of ST-T drop in electrocardiogram before and after surgery for the prognosis of PCI surgery was evaluated.[Results]Among the 244 patients,28 had a poor prognosis.The time from onset to intervention treatment and the level of left ventricular end-diastolic diameter(LVDd)at 1 month after surgery in the poor prognosis group were higher than those in the good prognosis group(P<0.05).The levels of left ventricular ejection fraction(LVEF)at 1 month after surgery and the degree of ST-T drop from pre-to post-1 hour and pre-to post-24 hours were lower than those in the good prognosis group(P<0.05).Logistic regression analysis showed that prolonging the time from onset to intervention treatment,in-creasing the level of LVDd at 1 month after surgery,reducing the level of LVEF at 1 month after surgery,and reducing the degree of ST-T drop from pre-to post-1 hour and pre-to post-24 hours were all risk factors for a poor prognosis in patients with AMI undergoing PCI surgery(P<0.05).Analysis of receiver operating char-acteristic curve showed that the area under the curve of ST-T drop in electrocardiogram from pre-to post-1 hour and 24 hours in predicting a poor prognosis after PCI surgery was 0.721 and 0.718,respectively.[Conclu-sion]The evolution of ST-T segment in electrocardiogram is closely related to the prognosis of patients with AMI undergoing PCI surgery,and the degree of ST-T drop in electrocardiogram can be used to predict the prognosis of patients.
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