[Replacement of Left Atrioventricular Valve and Patch Augmentation of Right Atrioventricular Valve After Repair of Complete Atrioventricular Septal Defect:Report of a Case].

Reoperations can be challenging for patients who experience left and right atrioventricular valve failure after repair of a complete atrioventricular septal defect. Herein, we present a case of a 10-year-old boy who developed dysfunction in left and right atrioventricular valve following surgery for a complete atrioventricular septal defect. The patient underwent successful replacement of his left atrioventricular valve with a mechanical valve due to severe stenosis. Additionally, his right atrioventricular valve, in which the bridging leaflets adhered to the ventricular septal defect patch, causing the significant regurgitation, was repaired. The bridging leaflets were augmented using the autologous pericardium treated with ethanol after detaching the leaflets and chordae from the patch. Postoperative echocardiography showed that the prosthetic valve was functioning well, with no significant regurgitation in the right atrioventricular valve. This technique could benefit patients experiencing complex valve failures following atrioventricular septal defect surgery.