VAI TRÒ CỦA SIÊU ÂM TIM QUA THÀNH NGỰC TRONG ĐÁNH GIÁ KẾT QUẢ ĐIỀU TRỊ PHẪU THUẬT TOF TẠI BỆNH VIỆN ĐÀ NẴNG

Abstract

Background: Surgical repair is the definitive, standard-of-care treatment for tetralogy of Fallot (TOF). Transthoracic echocardiography (TTE) is a first-line, noninvasive, and cost-effective modality that supports diagnosis, operative planning, and postoperative assessment after TOF repair. Objectives: To determine the role of TTE in evaluating outcomes following surgical correction of TOF. Materials and methods: A retrospective descriptive-analytic study was conducted on 51 medical records of patients with TOF who underwent surgery at Da Nang Hospital from 2011 to 2022. Results: Females slightly outnumbered males (56.9% vs. 43.1%). The median age was 1.67 years; most patients were 1–5 years old (56.9%), followed by those <1 year (27.5%). The median body weight was 9.0 kg. Postoperatively, the pressure gradient across the pulmonary valve improved significantly compared with preoperative values (mean difference 55.64 ± 20.96; p < 0.001). In contrast, the change in left ventricular ejection fraction before versus after surgery was not statistically significant (p = 0.824). Early postoperative abnormalities detected by TTE included paradoxical interventricular septal motion (31.4%), residual pulmonary artery stenosis (23.5%), and a residual ventricular septal defect shunt (23.5%). Conclusion: TTE plays a central role in quantifying hemodynamic improvement and monitoring early postoperative complications after TOF repair, thereby facilitating timely intervention and potentially improving patient prognosis.