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一、试验原理及设想由于一般常规心电图检查对冠心病诊断的阳性率不够满意,故临床上曾采用各种增加心脏负荷的方法,以求提高心电图诊断的阳性率。目前应用最广且积累经验最多的仍为二级梯运动试验,但运动试验有下列缺点:①运动后心电图基线不平稳,造成结果判断困难;②有些病人不能进行运动试验(如年老体弱、下肢疾病)。因此,我们设想,应用药物的方法
First, the test principle and assumptions As the general conventional ECG examination of coronary heart disease is not satisfied with the positive rate, so the clinical use of a variety of methods to increase the heart load, in order to improve the positive rate of ECG diagnosis. At present, the most widely used and most accumulated experience is still the second-level ladder exercise test, but the exercise test has the following disadvantages: ① post-exercise baseline ECG is not stable, resulting in difficult to judge; ② some patients can not exercise test (such as frail , Lower extremity disease). Therefore, we envision the method of applying the drug