Staged ventricular recruitment following single-ventricular palliation in unbalanced atrioventricular septal defect with heterotaxy syndrome.

A newborn with unbalanced atrioventricular septal defect and heterotaxy syndrome underwent early surgeries for single-ventricular palliation due to a small left ventricle. Following procedures, including the modified Damus-Kaye-Stansel, there was a notable increase in left ventricular size. This progression allowed successful biventricular repair at 7 months. This case highlights potential ventricular development after palliative procedures in patients with borderline ventricular size.