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目的 :探讨冠心病患者活动平板运动试验前后校正 Q- T离散度 (Q- Tcd)变化对评定心肌缺血的价值.方法 :比较 50例正常人及 6 0例冠心病患者活动平板运动试验阳性前后的 Q- Tc离散度变化.结果 :冠心病组运动前后及运动后各时点 Q- Tcd较正常组明显增大 (“,”Objective:To investigate the Q|Tc dispersion (Q|Tcd) change of patients with coronary heart disease (CHD) and its importance of evaluating myocardial ischemia by treadmill exercise ECG test.Methods:Treadmill exercise ECG test was to carry out in the 50 normal people and 60 patients with CHD,Q|Tcd was measured before and after exercise.Results:In CHD group showed Q|Tcd significantly increased ( P