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志愿者41例,男性,有胸痛,曾作冠状动脉造影。其中18例年龄37—59岁,冠状动脉正常,作为对照组;其余23例年龄35—60岁,冠状动脉主要分支至少有一支狭窄≥70％,6例有陈旧性心肌梗塞,所有病例运动试验均阳性。经踏车功量计立式运动试验,研究运动导致心肌缺血时心率与QT间期的关系。结果两组的心率与QT间期均呈明显的负线性相关:对照组QT(毫秒)=451-1.36×心率,r=-0.78;冠心病组QT(毫秒)=396-0.73×心率,r=
41 volunteers, men, chest pain, coronary angiography. Among them, 18 cases were aged 37-59 years and had normal coronary arteries as the control group. The remaining 23 cases were 35-60 years old. There were at least one stenosis ≥70% in the main branches of the coronary artery. Six cases had old myocardial infarction. Are positive. The treadmill power meter vertical movement test to study exercise-induced myocardial ischemia when the heart rate and QT interval relationship. Results There was a negative correlation between heart rate and QT interval in both groups: QT (ms) = 451-1.36 × heart rate, r = -0.78 in the control group; QT (ms) = 396-0.73 × heart rate, r =