运动诱发心肌缺血时心肌电复极的变化  

The Dispersion of Repolarization and Cardiovascular Response during Exercise-induced Ischemia

作　　者：陈珊[1] 李建华[2] 

机构地区：[1]浙江大学医学院附属第二医院心内科,杭州310009 [2]浙江大学医学院附属邵逸夫医院康复科

出　　处：《中国运动医学杂志》2003年第3期251-253,共3页Chinese Journal of Sports Medicine

摘　　要：目的 :了解冠心病患者给予运动负荷诱发心肌缺血对心肌复极离散度 (QTcd)的影响。方法 :经冠脉造影术证实的 4 9例冠心病患者与 38例造影阴性的对照组 ,进行活动平板试验 ,记录运动前后 12导联心电图、血压 ,检测QTcd并作分析比较。结果 :冠心病患者运动诱发心肌缺血 ,其运动时间、运动高峰时心率、心率的增加值、心脏作功指数均小于对照组 ,运动高峰时QTcd较运动前明显增大 (P <0 0 1)。结论 :冠心病患者心脏储备下降 ,运动耐量减小 ,运动中心肌复极离散度增大 ,电生理差异性增加。建议可将QTcd作为康复运动的观察指标之一。Objective To investigate the cardiovascular response and myocardium repolarization abnormality of patients with coronary heart disease during exercise. Methods Coronary Arteriographies were carried out in 87 patients. 49 CAG (+) proved CHD and 38 CAG (-) without CHD as control underwent exercise treadmill test. HR,BP, 12-leads ECG QTcd were accessed . Results Lower HR, ΔHR and HR×SBP were found in CHD patients. The QTcd of CHD patients were significantly longer during exercise. Conclusion The repolarization was abnormally prolonged and the dispersion of repolarization were increased during exercise-induced ischemia in patients with CHD.

关 键 词：运动负荷 冠心病 心肌缺血 心肌复极离散度 冠脉造影术 

分 类 号：R87[医药卫生—运动医学]