摘要
Abstract
Objective To explore and analysis the electrocardiogram manifestations,related clinical manifestations and pathological vascular characteristics of acute occlusion of the circumflex branch.Methods A total of 46 cases of acute myocardial infarction caused by circumflex branch occlusion diagnosed and treated in Hebi People's Hospital from January 2018 to June 2023 were selected as the study subjects,and the electrocardiographic manifestations,related clinical manifestations and characteristics of diseased blood vessels of the patients were detected and investigated,and the prognosis of the patients was followed up.Results Among the 46 patients,23 cases were diagnosed with proximal mid-segment occlusion(proximal mid-segment group)and 23 cases were diagnosed with distal segment occlusion(distal segment group)by coronary angiography.There was no significant difference in the comparison of the general data of the two groups(P＞0.05).The ECG features of ST V1-V3 depression,STⅡ,Ⅲ,aVF elevation,STⅡ,Ⅲ,aVF depression,TV2＞TV5,ST I-aVL depression,ST I-aVL elevation and ST V7-V9 elevation in the proximal mid-segment group were 60.87%,47.83%,8.70%,43.48%,and 69.57%,17.39%,60.87%,and 4.35%,82.61%,0%,17.39%,30.43%,8.70%,60.87%in the distal segment group;there were similarities in the electrocardiographic manifestations of the proximal mid-segment group and the distal segment group as well as their respective characteristics.All patients were followed up until August 1,2023,and the mean follow-up time of the proximal mid-and distal segment groups was 32.69±4.20 months versus 32.92±3.28 months,and the incidence of adverse cardiovascular events was 26.09%in the proximal mid-group.There was no difference in the incidence of cardiovascular adverse events between the two groups(P＞0.05).ROC curve analysis showed that the area under the prediction curve of electrocardiogram for patients with acute occlusion of the proximal circumflex artery were 0.793(95%CI:0.678-0.914,P＜0.001),sensitivity was 78.22%and specificity was 81.91%.Conclusions Electrocardiogram has important predictive value in diagnosing acute myocardial infarction in which the infarct related artery is a circumflex branch.It can auxiliary determine the infarct site of patients and also auxiliary evaluate the prognosis of acute myocardial infarction patients.关键词
心电图/回旋支急性闭塞/急性心肌梗死/病变血管/主要心血管不良事件Key words
electrocardiogram/acute occlusion of the circumflex branch/acute myocardial infarction/pathological blood vessels/major cardiovascular adverse events
