论文部分内容阅读
目的:利用左侧旁路(AP)对3例顺行房室折返性心动过速(AVRT)患者进行研究,这些患者的逆行心房激动最初部位难以确定。方法和结果:对3例顽固性AVRT患者(病例1为42岁女性,病例2为52岁男性,病例3为40岁男性)进行电生理学检查和射频消融。在AVRT期间,可观察到延长的室房(VA)逆传间期(100～180ms)以及远侧和近侧冠状窦(CS)部位几乎同步激动。在AVRT和心室起搏期间,在所有患者中都记录到了心房双电位。对具有心房双电位(第一部分在左侧房室环处心室电位后即出现)的二尖瓣环处进行消融可消除逆行AP传导。
PURPOSE: To investigate the effects of left ventricular bypass (AP) on three patients with retrograde ventricular reentrant tachycardia (AVRT). The initial site of retrograde atrial activation in these patients is difficult to determine. Methods and Results: Electrophysiology and radiofrequency ablation were performed on three patients with refractory AVRT (case 42, age 42, case 2, age 52, and case 3, age 40, male). During AVRT, prolonged retrograde compartmental (VA) intervals (100-180 ms) as well as near-synchronous excitations of the distal and proximal coronary sinus (CS) sites were observed. During AVRT and ventricular pacing, atrial bipotentials were recorded in all patients. Ablation of retrograde AP conduction is performed by ablating the mitral valve annulus with atrial bipotentiality (the first of which occurs immediately after the ventricular potential at the left atrioventricular loop).