Successful biventricular repair following strategic treatment focused on left ventricular growth in a patient with hypoplastic left heart complex and unbalanced right dominant atrioventricular septal defect: a case report.

A patient with borderline left ventricle successfully underwent biventricular repair following a staged surgical approach to promote left ventricular growth. Despite initial concerns about left ventricle size, apex formation and adequate size of atrioventricular valve indicated potential for future growth. The patient demonstrated significant left ventricular growth, resulting in stable biventricular circulation and a favourable outcome over a three-year postoperative follow-up period.Clinical Registration Number: Institutional Review Board of Osaka City General Hospital, number 1902139.