SỰ THAY ĐỔI THỂ TÍCH VÀ CHỨC NĂNG NHĨ TRÁI TRÊN SIÊU ÂM TIM 2D/3D TRƯỚC VÀ SAU TRIỆT ĐỐT RUNG NHĨ BẰNG NĂNG LƯỢNG SÓNG CÓ TẦN SỐ RADIO

Abstract

Aims: To investigate the changes in left atrial size and function after atrial fibrillation ablation over time. Materials and methods: A cross-sectional descriptive study was conducted in patients with atrial fibrillation for whom radiofrequency ablation was indicated. Detailed data of patients’ history, clinical examination biochemical tests, 12-lead ECG were collected. Two-dimensional and three-dimentional echocardiograms were performed according to the guidelines of the American Society of Echocardiography before radiofrequency ablation procedures and 24 hours after the ablation, after 1 month, and after 3 months. Left atrial volume was assessed on 3D echocardiography using Heart Model software. Results: From June 2020 to June 2021, 65 patients with atrial fibrillation received radio frequency ablation treatment were included in the study, the mean age was 49.3 ± 19.9 years, male 28 (43.1%) and female 37 (56.9%). Minimum left atrial volume (LAVImin) slightly increased after ablation (from 17.4 to 18.7ml/m² and then gradually decreased at the 1st and the 3rd month, respectively, 16.2 and 15.4, p<0.05. Left atrial function (LAEF) decreased after ablation (37.8% to 34.4%) and then gradually increased at month 1 and 3 by 39.5% and 41.4%, respectively. The change was evident in the persistent AF group while not clearly in the paroxysmal atrial fibrillation group. Conclusion: Left atrial volume and function in patients with atrial fibrillation changed after radiofrequency ablation therapy, showing the improvement of left atrial function after thee-month follow-up duration, especially in the persistent atrial fibrillation group.