Fig. 2

Schematic picture illustrating the result of closing the “Swiss Cheese” VSDs with two patches of fresh pericardium and excluding the right ventricular apex. The “Swiss Cheese” VSDs could be always divided into two portions, the outflow tract area defects and the apex trabecular area defects by the moderator band. Two fresh autologous pericardium patches of corresponding size were sutured to cover the two portions including all the VSDs. During suturing the lower patch, 3 to 5 6–0 or 5–0 polypropylene interrupted pledgetted sutures were evenly placed between the patch and the trabecular muscles Ao: aorta; MPA: main pulmonary artery; RA: right atrium; TV: tricuspid valve; RV: right ventricle