| Objective The treadmill exercise testing was performed in patients with coronary heart disease to detect metabolic equivalents (METS), exercise time and maximum heart rate, meanwhile, ST segment fluctuations, whether angina pectoris and various arrhythmias are accured were monitored by 12 leads electrocardiogram. The patients underwent coronary angiography and left ventriculography at appropriate time to investigate the extent of coronary artery disease and left ventricular ejection fraction. The study was to elucidate the diagnostic value of treadmill exercise testing and to evaluate coronary artery stenosis dsgree in patients with coronary heart disease. Methods The treadmill exercise testing was carried out in 94 patients with coronary heart disease and coronary angiography was carried out at appropriate time. To detect metabolic equivalents , exercise time and maximum heart rate of the patients, meanwhile, ST segment fluctuations and whether angina pectoris and various arrhythmias are accured were monitored by 12 leads electrocardiogram. The patients underwent coronary angiography and left ventriculography at appropriate time to investigate the extent of coronary artery disease and left ventricular ejection fraction. Some related parameters were evaluated . Analyze the results and process it with SPSS.Results The more heavier coronary artery obstacled,the more earlier will it be when ST segment depression occurred. So as the ST amplitude and the time it lasted. The sensitivity specificity positive predictive value and negative predictive value in predicting multivessel disease by exercise -induced ST segment depression >0.1mV was 76%, 36% , 81%, 71% respectively. The sensitivity specificity positive predictive value and negative predictive value in predicting multivessel disease by METS≤6.0 was 44% 85% 92% 70%. However, the sensitivity specificity positive predictive value and negative predictive value in predicting multivessel...
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