28 April 2026
: Case report 
Prosthesis-Free Repair of Partial Atrioventricular Septal Defect in Down Syndrome: A Valve-Sparing Technique
Challenging differential diagnosis, Congenital defects / diseases, Educational Purpose (only if useful for a systematic review or synthesis)
Živojin S. Jonjev
ABCDEFG 1,2*, Aleksandar M. Milosavljevic BDF 1,3, Mirko Todić BDF 1,3, Jovan Rajić BDF 1, Kristina Jonjev BDF 3
DOI: 10.12659/AJCR.951886
Am J Case Rep 2026; 27:e951886
Video 1 Preoperative transesophageal echocardiography (real-time loop, mid-esophageal 4-chamber view)Introductory slide presents primum atrial septal defect (ASD) and membranous ventricular septal defect (VSD) indicated with red arrows. Mitral and tricuspid regurgitation were indicated with blue arrows. Preoperative color Doppler reveals severe mitral regurgitation and tricuspid regurgitation. The final slide presents postoperative valves with no regurgitation.