Fig. 1

Schematic diagrams of the repair techniques. a The Daggett’s technique. The left ventricular defects are closed separately in a single layer. b The modification described in the text. Sutures are numbered and placed in numerical order. A cross section shows the secondary endoventricular patch (asterisk) closes both the septal and ventriculotomy defects separately with the hinge stitches between (③)