常规十二导联诊断急性下壁心肌梗塞的效果观察

目的：以单纯性下壁心肌梗塞为对照,探讨右室心肌梗塞合并急性下壁心肌梗塞的12导联心电图特征.材料与方法：2010年1月至2013年8月间诊治的22例右室心肌梗塞合并急性下壁心肌梗塞患者列入研究组,同期48例单纯下壁心肌梗塞患者列入对照组,回顾性观察两组患者常规12导联心电图特征,并进行比较分析.结果：ST段抬高幅度比较,研究组Ⅲ＞ⅡI的检出率为90.1％,对照组仅4.2％,研究组明显高于对照组,数据经统计学比较具有极显著差异（P＜0.01）,检验特异性为90.1％;ST段在V2导联中压低幅度和aVF导联中抬高幅度的比值比较,研究组≤0.5的患者比例为81.8％,明显高于对照组的比例4.2％,数据经统计学比较具有极显著差异（P＜0.01）,检验特异性为90％.结论：利用常规12导联心电图诊断急性下壁心肌梗塞是否合并有右室心肌梗塞具有较高的特异性和敏感性,当ST段抬高幅度出现Ⅲ＞ Ⅱ时,或ST段在V2导联中压低幅度和aVF导联中抬高幅度的比值≤0.5时,均提示较大可能性的右室心肌梗塞发生.

The conventional twelve leads in the diagnosis of acute inferior wall myocardial infarction effect

Purpose： To simple inferior wall myocardial infarction as control, to evaluate the right ventricular myocardial infarction with 12 lead electrocardiogram characteristics of acute inferior wall myocardial infarction. Materials and Methods： 22 patients with fight ventricular myocardial infarction from 2010 January to 2013 August in the diagnosis and treatment of patients with acute inferior myocardial infarction with patients included in the study group, 48 cases of inferior myocardial infarction patients in the control group, the two groups were observed retrospectively 12 lead ECG features, and compare. Results： Compared with ST segment elevation range, detection of group Ⅲ 〉 Ⅱ was 90. 1%, the control group only 4. 2% , the study group was significantly higher than the control group, the data were statistically significant differences （ P 〈 0. 01 ）, test specificity 90. 1% ; ST segment in lead V2 and lead aVF in medium low amplitude comparison ratio elevation. The study group patients ≤ 0. 5, the proportion is 81.8%, obviously higher than the control group in the ratio of 4. 2%, the data were statistically significant differences （ P 〈 0. 01 ）, to test the specificity was 90%. Conclusion： The use of the conventional 12 lead ECG in the diagnosis of acute inferior wall myocardial infarction is associated with fight ventricular myocardial infarction have high specificity and sensitivity, when the magnitude of ST segment elevation III 〉 II, or ST segment in lead V2 and lead aVF in medium low amplitude ratio ≤ elevation 0. 5, indicated that the fight ventricular myocardial infarction great potential occurrence.