Lezhava M G, Khvichiia N Ia, Iosava K V
Kardiologiia. 1990 Aug;30(8):63-5.
During treadmill exercise, 57 patients with documented coronary heart disease (CHD) were studied for the change patterns in R wave amplitudes in V5 lead by analyzing ECG on a computer. With exercise, 86% of CHD patients showed higher or no R wave amplitude changes, whereas 73.7% of healthy subjects displayed its lower changes. Increased or no R wave amplitude changes in CHD patients was accompanied by more marked quantitative ischemic parameters than their decrease. A significant correlation was found between higher R wave amplitude and extended exercise-induced myocardial ischemia. Decreased R wave amplitude was associated with local ischemic shifts. Comparison of the data obtained from the computer-assisted ECG analysis and radiocardiometric findings during the exercise test demonstrated that an increase m R wave amplitude in CHD patients was followed by higher cardiac volume, which indicated ischemic myocardial dysfunction.
在跑步机运动期间，通过计算机分析心电图，对57例确诊为冠心病（CHD）的患者进行了V5导联R波振幅变化模式的研究。运动时，86%的冠心病患者R波振幅升高或无变化，而73.7%的健康受试者R波振幅降低。冠心病患者R波振幅升高或无变化时，其定量缺血参数比降低时更为明显。发现较高的R波振幅与运动诱发的心肌缺血延长显著相关。R波振幅降低与局部缺血移位有关。运动试验期间计算机辅助心电图分析获得的数据与放射心动图结果的比较表明，冠心病患者R波振幅增加后心脏容积增大，这表明存在缺血性心肌功能障碍。
