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活动中的心电监护多用来探测ST段改变,最常用的是双极导联CM5,因此比较CM5与常规心电导联诊断ST段改变的优劣极为重要。本文以运动试验作为诱发心内膜下缺血的模式,以经皮冠状动脉成形术作为诱发透壁缺血的模式,研究两组病人在导联CM5及常规导联上的ST段改变。组Ⅰ:均为严重冠状动脉病患者(指一枝或多枝大冠状动脉管腔小于正常管腔的70%,运动末期ST段下降>0.5毫米者)共30例(男24,女6),平均年龄54岁,经患者同意作踏车运动试验,50转/分,每三分钟增加工作负荷一次,心率增加10次/分,至引起心绞痛或室性阻搏或ST段下降>3毫米或血压下降或虚脱为止,并采用喷水式描
Activities of ECG monitoring used to detect ST segment changes, the most commonly used bipolar lead CM5, so comparing CM5 with conventional ECG diagnosis of ST segment changes in the merits of the most important. In this paper, exercise test as a model of induced subendocardial ischemia, percutaneous transluminal coronary angioplasty as a model of induced transmural ischemia, two groups of patients in the lead CM5 and conventional leads ST segment changes. Group I: A total of 30 patients (male 24, female 6) who were both patients with severe coronary artery disease (one or more branches of the large coronary artery less than 70% of the normal lumen and ST segment more than 0.5 mm at the end of the exercise) Average age 54 years old, with the patient agreed treadmill exercise test, 50 rev / min, increase workload once every three minutes, the heart rate increased 10 beats / min to cause angina or ventricular stroke or ST segment drop> 3 mm or Blood pressure drops or collapse so far, and using water-based stroke