PTCA及支架术对QT离散度及心肌节段性运动的影响  

Effects of successful percutaneous transluminal coronary angioplasty or stent implantation on QT dispersion and myocardial segmental motion

作　　者：石奇松[1] 魏芳[2] 王喜卓 刘志敏[1] 王连虎[1] 靳翠彬[3] 付银环[1] 

机构地区：[1]保定市第二医院,071051 [2]河北省职工医学院 [3]保定市第一医院

出　　处：《实用心脑肺血管病杂志》2004年第1期4-6,共3页Practical Journal of Cardiac Cerebral Pneumal and Vascular Disease

摘　　要：目的　探讨PTCA及支架术对QT离散度 (QTd)及心肌节段性运动的影响。　方法　 36例患者于术前行十二导联心电图、超声心动图和冠状动脉造影。PTCA及支架术后 2周复查心电图和超声心动图。　结果　全组QTcd由PTCA及支架术前的 71 84ms± 16 72ms降至术后的 5 9 37ms± 14 97ms(P <0 0 0 1)。术前有心肌节段性收缩运动异常而经PTCA及支架术获得血运重建的 14 1个节段中 ,术后有 10 7个节段 (6 2 4 1% )功能得到改善 (P<0 0 0 1)。　结论　成功的PTCA及支架术可使冠心病患者QTd显著缩短 ,减低恶性心律失常和心源性猝死的发生率 ,并能改善缺血心肌的收缩功能 。Objective To investigate the effect of QT dispersion(QTd) and myocardial segmental motion after successful transluminal coronary angioplasty or stent implantation Methods 36 patients with coronary artery disease underwent 12 lead electrocardiography and echocardiography and coronary angiography 12 lead electrocardiography and echocardiography were repeated two weeks after successful percutaneous transluminal coronary angioplasty(PTCA) or stent implantation Results After PTCA or stent implantation the average QTd decreased from 71 84ms±16 72ms at baseline to 59 73ms±14 97ms(P< 0 001) Among 141 regascularized segments with dysfunction there were 107 segments recovered their contractile function(107/141,62 41%) Conclusion For the QTd decreased and the anoxic segments of myocardium improved by successful PTCA or stent implantation,the risk of ventricular arrhythmia and sudden casdiac death might be decseased,the prognosis of patients with coronary artery disease might be inproved

关 键 词：PTCA 支架置入术 QT离散度 心肌节段性运动 心电图 超声心动图 冠状动脉造影 心肌缺血 

分 类 号：R654.2[医药卫生—外科学]