Surgical techniques for repair of complete atrioventricular canal defect

(A) One-patch repair – Prosthetic patch material is placed to close the ventricular and atrial communications. The common AV valve is divided and reattached to the patch.
(B) Two-patch repair – Prosthetic patch material is used to close the ventricular septal defect, and the common AV valve is sutured to the top of the patch. The atrial component is closed with a pericardial patch that is sutured to the common AV valve and ventricular patch.
(C) Modified (simplified) single-patch repair – The common AV valve is directly sutured to the crest of the ventricular septum. Pericardium is used to close the atrial component and is sutured to the crest of the ventricular septum, separating the common AV valve into right and left components.