Tên đề tài luận án: Đánh giá tính an toàn và hiệu quả của siêu âm trong buồng tim hướng dẫn bít thông liên nhĩ lỗ lớn bằng dụng cụ qua da
Chuyên ngành: Nội Tim mạch Mã số: 62720141 Họ và tên nghiên cứu sinh: Nguyễn Quốc Tuấn
Họ và tên người hướng dẫn: GS.TS.BS Đặng Vạn Phước, PGS.TS.BS Hoàng Văn Sỹ Tên cơ sở đào tạo: Đại học Y Dược Thành phố Hồ Chí Minh
Từ khóa: thông liên nhĩ lỗ lớn, bít lỗ thông liên nhĩ bằng dụng cụ, siêu âm trong buồng tim
ONLINE Ph.D. DISSERTATION INFORMATION
The Ph.D. Dissertation title: Safety and efficacy of percutaneous transcatheter closure of large atrial septal defect under intracardiac echocardiography guidance
Specialty: Cardiology Code: 62720141
Ph.D. candidate: Nguyen Quoc Tuan
Supervisor 1: Professor Dang Van Phuoc, MD, PhD Supervisor 2: Associate Professor Hoang Van Sy, MD, PhD
Academic institute: University of Medicine and Pharmacy at Ho Chi Minh City
SUMMARY OF NEW FINDINGS
Background: Intracardiac echocardiography (ICE) is a new technique that has many advantages over transesophageal echocardiography (TEE). In Vietnam, there have been no long-term studies with large sample sizes to evaluate the safety and effectiveness of ICE-guided closure of large atrial septal defect (ASD) with devices.
Objectives and Methods: A descriptive cross-sectional study with longitudinal follow-up was conducted on 109 patients with large atrial septal defects (ASDs) who underwent percutaneous ASD closure using devices at the Interventional Cardiology Department, Cho Ray Hospital, from September 1, 2019, to October 31, 2022.
Results: The patients had an average age of 43.03 ± 11.94 years, with females accounting for 79.82%. The maximum diameter of ASDs measured by TEE and ICE were strongly correlated with the diameter measured by sizing balloon, with correlation coefficients of r(TEE) = 0.678 and r(ICE) = 0.882, respectively. All cases were technically successful and maintained after 12 months (device in correct position and no residual shunt). After ASD closure, the mean pulmonary artery pressure (PAP) and systolic PAP measured by right heart catheterization significantly decreased (p<0.001). During follow- up, the systolic PAP and right ventricular diameter measured by transthoracic echocardiography significantly decreased at 1 month and 6 months post-ASD closure, with no further decrease at 12 months. In-hospital, there was one patient with a vascular complication requiring surgical treatment, and two patients who developed atrial fibrillation after closure, which was converted to sinus rhythm with medication and maintained after 12 months. The procedural success rate was 97.25%. After discharge, there was one case of newly onset atrial fibrillation that persisted until the 12th month. The overall procedural success rate was 99.08%.
Conclusion: The maximum diameter of ASDs measured by ICE had a higher correlation coefficient with the diameter measured by sizing balloon compared to TEE. The technical success rate of ASD closure under ICE was 100% and was maintained up to 12 months post-closure. The rate of major adverse events in-hospital was 2.75%, and after discharge, it was 0.92%.
Keywords: large atrial septal defect, percutaneous ASD closure, intracardiac echocardiography