标准12导联心电图与标准监护Ⅱ导联监测心肌缺血对照研究

A control study of standard 12-lead ECG vs standard monitoring II lead monitoring myocardial ischemia

目的评价标准12导联心电图与标准监护Ⅱ导联监测心肌缺血的有效性和敏感性。方法以标准12导联心电图作为判断心肌缺血的标准，将50例有ST段改变的心脏病患者设为病例组，45例无ST段改变的心脏病患者设为非病例组，比较标准12导联与标准监护Ⅱ导联心电图心肌缺血检出率。结果50例经标准12导联心电图发现存在心肌缺血的患者，同时经标准监护Ⅱ导联检测仅发现15例患者存在心肌缺血，差异有极显著性（χ^2=53．846，P〈0．01），且标准监护Ⅱ导联心电图出现心肌缺血改变假阳性率为11．1％。结论标准监护Ⅱ导联心电图并不能有效发现心肌缺血，在l临床监护中需同时描记标准12导联心电图。

Objective To evaluate the validity and sensitivity of standard 12-lead ECG vs standard monitoring II lead monitoring myocardial ischemia. Methods judging myocardial ischemia, 50 heart diseases patients 45 ones without to non-case group, and detection rates 12-lead ECG and standard monitoring II lead. Results Standard 12-lead ECG was served as criteria for with ST changes were assigned to case group and of myocardial ischemia compared between standard Of fifty myocardial ischemia patients detected by standard 12-lead ECG, only 15 ones had myocardial ischemia by standard care II lead at the same time, differences were very significant（χ^2 =53. 846, P〈0.01）and the false positive rate of myocardial ischemia change from standard care II lead was 11.1%. Conclusion Standard care II lead can＇t detect myocardial ischemia effectively, at the same time the standard 12-lead ECG should be recorded in custody.