Ventricular septation is a biventricular repair for certain types of functionally univentricular hearts. Double inlet left ventricle (DILV) is one type of functionally univentricular heart which in certain instances is amenable to ventricular septation. Thirty-four patients underwent ventricular septation for DILV from 1971 to 2000. Hospital death occurred in seven and late death in two. Mean follow-up period was 15 years. Actuarial survival rate was 73.3% (24 patients) at 15 years, 73.3% (15 patients) at 20 years, 73.3% (five patients) at 25 years, and 73.3% (one patient) at 30 to 40 years. Ventricular septation is an alternative to Fontan operation for selected patients with single ventricle, DILV.
Ventricular septal defect (VSD) associated with complete transposition of the great arteries was studied, and each of the typical anatomic varieties was depicted to emphasize the characteristic features of the VSD. Among the 32 specimens, 13 cases were found to have a VSD lying anterosuperior to the origin of the papillary muscle of the conus, indicating that repair of the VSD could be performed without difficulty. Such a defect situated above the crista supraventricularis has proved to be technically most preferable, as shown in the case report. In contrast, the remaining 19 cases appeared to be inappropriate for the technique, as the VSD was overhung by a part of the tricuspid valve. Additional analysis was made of the angiocardiographic appearances of the VSD, demonstrating some characteristic patterns.
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