KẾT QUẢ ĐIỀU TRỊ TIM NHANH NHĨ ĐƠN Ổ Ở TRẺ EM BẰNG NĂNG LƯỢNG SÓNG TẦN SỐ RADIO TẠI BỆNH VIỆN NHI TRUNG ƯƠNG

Abstract

Objective: To describe the clinical features, paraclinical findings, and characteristics of focal atrial tachycardia in children at the Cardiovascular Center - National Institute of Paediatrics. Subjects and methods: Cross-sectional study of 32 patients diagnosed with monofocal atrial tachycardia by electrophysiological investigation. Results: The mean age at intervention was 54.2 ± 57.3 months (ranging from 25 days old to 17 years). The atrial tachycardia focus mainly originated from the right atrium (71.9%), with the crista terminalis being the most common site (40.6%). The initial ablation success rate was 81.3%. The recurrence rate after the first intervention was 26.9%, with a median recurrence time of 65 days. Two months after intervention, patients with impaired left ventricular systolic function showed significant improvement. No complications occurred during the procedure. Conclusion: Focal atrial tachycardia can occur at any age. The tachycardia focus is not randomly distributed throughout the atrium but tends to cluster at specific anatomical sites. Electrophysiological intervention plays an important role in the treatment of focal atrial tachycardia, leading to marked improvement in left ventricular systolic function, with a high success rate and a low risk of complications.