【摘要】 目的 :探讨冠状动脉 (冠脉 )狭窄程度和部位与急性冠脉完全堵塞时产生室性心律失常的关系。方法 :对 10 0例冠脉狭窄 (5 0 %～ 95 % )患者行经皮腔内冠状动脉成形术 (PTCA)球囊充盈 ,球囊充盈前、充盈时及充盈后同步记录 12导联心电图。结果 :球囊阻塞冠脉时室性心律失常的发生率为 12 %。发生室性心律失常的患者冠脉狭窄程度轻 [(70± 13) % :(85± 14) % ,P <0 .0 1],无侧支循环 ,易出现 ST段变化 (P <0 .0 5 ) ,扩张左前降支比扩张左回旋支和右冠脉更易发生室性心律失常 (P <0 .0 5 )。结论 :轻度冠脉狭窄和左前降支狭窄行 PTCA时似易发生室性异位搏动。更多还原

【Abstract】 Objective:To elucidate the relationship between the severity and location of coronary artery stenosis and ventriculor arrhythemia induced during acute total obstnction of the coronary artery.Method:100 cases of coronary artery atenosis (50%~95%) were performed with filled balloor to obstruct coronary artery during PTCA.A simultaneous 12 leads electiocardiogram ware taken before,after and at balloon filling.Result:When coronary artery was obstructed by balloon,ventricular arrhythemias occurred in 12 patients (12%).In patiants who presented ventricular arrhythemia,the coronary stenosis was milder 〔(70±17)% vs (85±14)%,P< 0.01 〕,had no collateral circulation and presented more ST segment shifting.Ventricular arrhythmia occurred more when dilating the left anterior doscending artery than when dilating the left circumflex or right coronary artery.Conclusion:Patients with mild stenosis of coronary artery or with stenosis of left anteeior descending artery may present more ventrienlar arrhythmia during PTCA.更多还原