Thăm dò điện sinh lý và cắt đốt qua ống thông nhịp nhanh vòng vào lại nút nhĩ thất bằng năng lượng sóng có tần số radio

Electrophysiologic c-haracteristics and outcome of atrioventricular node reentrant tachycardia have not been thoroughly studied in Vietnam. Objectives: We conducted this study to analyze clinical and electrophysiologic c-haracteristics and outcome of atrioventricular node reentrant tachycardia treatment by radiofrequency energy at Cho Ray Hospital. Methods: A retrospective, cross-sectional descriptive study of 27 consecutive patients with atrioventricular node reentrant tachycardia underwent endocavitary electrophysiological studies and radiofrequency ablation f-rom December 2018 to April 2019. Results: Among 27 patients, the mean age was 53.0 ± 9.7 years, and the female to male ratio was 3:1. All patients had evidence of dual conduction through the AV node. The median AH interval was 90 ms. In 100% of cases, there were the slow-fast atrioventricular node reentrant tachycardia. The successful radiofrequency ablation was recorded in 27 of 27 patients (100%), and no patient had any complications. Conclusions: Our study revealed that atrioventricular node reentrant tachycardia occurred more frequently in female than in male, and all patients had the slow-fast atrioventricular node reentrant tachycardia during electrophysiologic study. The rate of successful radiofrequency ablation of slow pathways was high, and the complication rate was very low.