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目的:探讨射频消融治疗由室性期前收缩(PVB)触发的特发性心室颤动(VF)的效果。方法:常规心电图和动态心电图记录1例特发性VF患者的平常PVB。心内电生理检查诱导VF后,对触发VF的PVB和平常的PVB进行比较。运用起搏标测法寻找PVB的心室位点并行放电消融。术后每个月随访1次,并行动态心电图检查。结果:心内电生理检查可重复诱导出VF,VF均由触发PVB所诱导,触发PVB由2种形态构成,与平常的PVB不完全相同。起搏标测法确定PVB的位点后,放电消融成功。术后随访至今,患者无VF和晕厥发作。结论:特发性VF患者经射频消融治疗触发PVB可以有效地预防VF发作。
Objective: To investigate the effect of radiofrequency catheter ablation on idiopathic ventricular fibrillation (VF) triggered by ventricular premature contractions (PVB). Methods: Normal PVB was recorded in 1 patient with idiopathic VF by conventional ECG and Holter. After intracardiac electrophysiological examination induced VF, PVBs that triggered VF were compared to those of normal PVBs. Use Pacing Method to Find Concurrent Discharge Ablation of Ventricular Site in PVB. Follow-up 1 month after surgery, dynamic Holter examination. Results: Intracardiac electrophysiological examination could induce VF and VF both induced by triggering PVB. The triggering of PVB consisted of two forms, which were not exactly the same as normal PVB. Pacemaker mapping method to determine the site of PVB, ablation success. Up to now, there was no VF or syncope in the patients. CONCLUSIONS: PVB triggered by radiofrequency catheter ablation in patients with idiopathic VF can effectively prevent the onset of VF.