Nghiên cứu đặc điểm điện sinh lý và kết quả triệt đốt ngoại tâm thu thất nguyên phát đường ra thất phải

Abstract

Objective: To study the electrophysiology and efficacy of radio frequency (RF) ablation for idiopathic right ventricular outflow tract (RVOT) premature ventricular complex (PVC). Subject and method: A prospective, descriptive study was performed on 100 patients with idiopathic RVOT PVC. All patients were examined, then electrophysiology studying and RF ablation were done. Success rate, complication, recurrent rate were recorded. Result: At successful ablation site, the mean earliest ventricular activation was of 33.3 ± 3.8 (ms). That the cut off of 31.5ms for the earliest ventricular activation will help to predict the PVC location with Se: 70.5% and Sp: 85.7%. The acute success rate was of 95%; 5.3% recurrence occurred in the first 30 minutes after ablation, 4.4% reoccurred in the follow-up period. During procedure, lethal ventricular arrhythmias occurred in 1%, bloody pericardial effusion was seen in 1%. Conclusion: The cut off of 31.5ms for the earliest ventricular activation highly predict the PVC location. Radiofrequency ablation for RVOT- PVC patients gained high success and low complication.