经静脉注射多巴酚丁胺心电图负荷试验，检查１１２例可疑冠心病，不同程度地提高受试者血压及心率，检出冠心病２１例，与二阶梯运动试验结果对照一致。结果两种试验对可疑冠心病的冠心病检出率分别为１９．０％和２０．６％。提示此种药物性负荷试验简便易行，与二阶梯运动试验一样可靠，并不受患者情绪及运动能力的影响。 After intravenous injection of dobutamine electrocardiogram, 112 cases of suspected coronary heart disease were examined, blood pressure and heart rate were increased to different degrees, and 21 cases of coronary heart disease were detected, which was consistent with the results of two-step exercise test. Results The detection rates of coronary heart disease in both tests were 19.0% and 20.6% respectively. It is suggested that this kind of drug load test is simple and easy, and is as reliable as the two-step exercise test. It is not affected by the emotion and exercise ability of patients.