KẾT QUẢ CÁC TRƯỜNG HỢP ĐẶT STENT ĐƯỜNG THOÁT THẤT PHẢI TRÊN BỆNH NHÂN CÓ TẮC NGHẼN ĐƯỜNG THOÁT THẤT PHẢI TẠI BỆNH VIỆN NHI ĐỒNG 1

Abstract

Background: Right ventricular outflow tract obstruction (RVOT) is a congenital heart defect that causes reduced pulmonary blood flow. RVOT stenting is a minimally invasive treatment and improves hemodynamics. This study aimed to evaluate the efficacy and safety of RVOT stenting in pediatric patients. Objectives: To evaluate the result of RVOT stenting in patients with RVOT obstruction at Children's Hospital 1 from January 1, 2019 to June 1, 2021. Method: Cross-sectional study. Results: The study on 32 patients with median age 76 days, newborns account for 31.2%. Median weight 4.7 kg. The patients are central cyanosis with median SpO₂ of 76% with complex congenital morphology and severe comorbidities, of which 71.9% had tetralogy of Fallot. The McGoon and Nakata indexes have medians of 1.4 and 108.7 mm²/m². Results immediately after stenting: Median SpO2 94.5% and statistically significant improvement (p < 0.001) compared to baseline and success rate 93.7%. No procedure-related deaths. Results after 6 months: Median SpO2 88% and statistically significant difference (p < 0.001) compared to before stent placement. The main and two branches of PA developed: Z score of the right PA increased from -1.8 to -0.3; the left PA increased from -2.1 to -0.3 and PA trunk increased from -3.3 to -1.9 (p < 0.001). Conclusions: RVOT stenting is a treatment method with high success rate, safety and low complications, facilitating complete surgical repair