急性正后壁心肌梗死采用常规导联与头胸导联心电图定位诊断比较

Comparison of Head-chest Lead Electrocardiogram and Routine Lead Electrocardiogram on Diagnosis of Acute Posterior Wall Myocardial Infarction

目的对急性正后壁心肌梗死的患者及健康人,分别采用常规12导联和头胸导联对其进行心电图定位诊断的比较。方法选取心内科急性正后壁心肌梗死的患者36例和健康人52例,分别应用常规12导联和头胸导联心电图进行同步记录,后参照冠状动脉造影确诊结果对两份心电图检查结果进行对比,经计算得出两种导联的心电图对急性正后壁心肌梗死诊断的确诊率和假阳性率,应用χ2检验作出统计学分析。结果常规12导联心电图对急性正后壁心肌梗死36例患者中,32例可确诊,确诊率为88.8%;对52例健康人做出了7例假阳性诊断,假阳性率为13.4%;头胸导联对急性正后壁心肌梗死患者有35例可确诊,确诊率为97.22%,对52例健康人做出了2例假阳性诊断,假阳性率为3.85%。差异具有统计学意义(P<0.05)。结论急性正后壁心肌梗死的临床诊断,头胸导联优于常规12导联,值得临床推广。

Objective For acute posterior wall myocardial infarction patients and healthy people, compared the routine lead ECG with head-chest lead ECG on diagnosis. Methods 36 acute poste- rior wall myocardial infarction patients and 52 healthy people were selected. Routine lead ECG and head-chest lead ECG were recorded simultaneously, and then the two kinds of ECG results were contrasted with coronarography confirmed diagnosis. The confirmed rates and false positive rates of diagnosis based on routine lead ECG and head-chest lead ECG were calculated by X2 test. Results For routine lead ECG and head-chest lead ECG, the confirmed rate were 88. 8% and 97. 22% in 36 patients of acute posterior wall myocardial infarction, and the false positive rate were 13.4% and 3.85% in 52 healthy people. There is a significant statistical difference （P 〈 0. 05）. Conclusion Head-chest lead ECG is better than routine lead ECG in the diagnosis of acute posteri- or wall myocardial infarction. It is worthy of clinical popularization.