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用定量运动负荷时的心电图早期诊断飞行员冠心病的方法已日益受到重视。它的优点有:(1)无需作心脏插管术,对身体是“无创性”的;(2)比双倍二阶梯试验的阳性率大三倍。但不足的是它的阳性率还不够高。很多研究报告指出,用普通导联的心电图ST段下降一毫米作指标,在冠心病的患者中,常有40%的患者用这种负荷方法诊断不出来,出现“假阴性”结果。因此如何提高诊断结果的准确性是当前研究的重点。在近年利用电子计算机自动测量心电图
The method of early diagnosis of pilot coronary heart disease by electrocardiogram with quantitative exercise load has been paid more and more attention. Its advantages are: (1) no need for cardiac catheterization, the body is “noninvasive”; (2) three times larger than the positive rate of double two-step test. But not enough is that its positive rate is not high enough. Many studies have pointed out that the general lead electrocardiogram ST-segment drop of one millimeter as an index in patients with coronary heart disease, often 40% of patients with this load method can not be diagnosed, the “false negative” results. Therefore, how to improve the accuracy of diagnostic results is the focus of current research. In recent years the use of electronic computers automatically measure the ECG