Kappos K G, Kranidis A J, Anthopoulos L P
First Department of Cardiology, Evangelismos Hospital, Athens, Greece.
Int J Cardiol. 1996 Dec 6;57(2):177-9. doi: 10.1016/s0167-5273(96)02821-5.
A case of polymorphic ventricular tachycardia torsade de pointes type, appearing in a 70-year-old female following radiofrequency catheter His ablation, is presented. The substrate was slow rate with ventricular bigeminy and QT prolongation which appeared after ablation. The same phenomenon reappeared after permanent VVIR pacemaker implantation with a basal rate of 55 beats/min. One episode of polymorphic ventricular tachycardia deteriorated into ventricular fibrillation, requiring a 360-J DC shock. Raising the pacemaker rate to 80 beats/min abolished the arrhythmias.
本文报告一例70岁女性在进行射频导管希氏束消融术后出现多形性室性心动过速尖端扭转型室速的病例。其基础情况为消融术后出现的心室二联律和QT间期延长导致的心率缓慢。在植入基础频率为55次/分钟的永久性VVIR起搏器后，同样的现象再次出现。一次多形性室性心动过速发作恶化为心室颤动，需要360焦耳的直流电除颤。将起搏器频率提高到80次/分钟可消除心律失常。
