论文部分内容阅读
目的探讨急性左主干闭塞心肌梗死的心电图特点及护理措施。方法回顾分析发病12h内经冠状动脉造影诊断为左主干及前降支、回旋支、右冠状动脉近端病变的急性ST段抬高心肌梗死患者入院时的心电图。护理方法包括减少心肌耗氧,增加心肌氧供,密切观察病情变化等。结果II、III、aVF导联ST段压低、aVR与aVL导联ST段抬高、aVR导联ST段抬高较V1导联明显等在左主干组均较其他各组更常见(P<0.05)。aVR导联ST段抬高的发生率在左主干组高于其余各组,与前降支组相比差异无统计学意义(P>0.05)。II、III、aVF导联ST段压低预测左主干闭塞敏感性64%,aVR与aVL导联ST段同时抬高特异性98%。结论II、III、aVF导联ST段压低及aVR、aVL导联ST段同时抬高有助于临床早期识别左主干急性闭塞。有效的护理可以辅助提高疗效,改善预后。
Objective To investigate the characteristics of electrocardiogram (ECG) and nursing measures of acute left main occlusion myocardial infarction. Methods The electrocardiogram of patients with acute ST-segment elevation myocardial infarction who were diagnosed as left main branch, anterior descending branch, circumflex artery and proximal right coronary artery by intracoronary angiography within 12 hours after onset was retrospectively analyzed. Nursing methods include reducing myocardial oxygen consumption, increase myocardial oxygen supply, close observation of changes in conditions. Results ST segment depression in a, a and aVF leads, ST segment elevation in aVR and aVL leads, and ST segment elevation in aVR leads were more pronounced than those in lead V1 in the left main trunk group (P <0.05) ). The incidence of ST segment elevation in lead aVR was higher in the left main trunk group than in the other groups, and there was no significant difference between them (P> 0.05). ST segment depression in II, III and aVF lead to a 64% sensitivity prediction of left main occlusion, and aVR and ST segment elevation in aVL lead to a specificity of 98% at the same time. Conclusions ST-segment depression of lead II, III, aVF and simultaneous elevation of ST segment of aVR and aVL lead to early recognition of left main acute occlusion. Effective care can help improve the efficacy and improve the prognosis.