Outcomes of 3-Dimensional Total Endoscopic Surgery for Partial Atrioventricular Septal Defect in Children: A Single-Center Experience in Vietnam.

Objective: To assess the midterm outcomes and feasibility of using 3-dimensional total endoscopic surgery (3D TES) for complete correction of partial atrioventricular septal defect (PAVSD) in children.

Methods: A descriptive study from January 2018 to June 2024 involved 20 patients with PAVSD who underwent surgical repair using 3D TES. The average patient age and average weight were 9.1 (range: 4 to 15) years and 25.02 kg, respectively. Mitral valve regurgitation was classified as mild in 2 patients, moderate in 12, and severe in 6, whereas tricuspid valve regurgitation was mild in 13 patients and moderate in 7.

Results: Peripheral circulation was established in all patients. Cardiopulmonary bypass and aortic cross-clamp times were 86.2 min and 142.2 min, respectively. The mechanical ventilation time averaged 4.9 h. Postoperative echocardiography included complete closure of the atrial septal defect, with mild mitral valve regurgitation in 16 patients and no regurgitation in 4. Tricuspid valve regurgitation was mild in 11 patients, and 9 patients had no regurgitation. During an average postoperative follow-up period of 3.35 years, there were no mortalities or cases requiring reoperation.

Conclusions: The 3D TES demonstrates feasibility, safety, and efficacy in treating PAVSD in children, with apparent aesthetic advantages.