Reconstruction of right ventricular outflow tract with monocusp-bearing sinusformed outflow patch

Abstract

The patch graft with sinus was implanted in 15 dogs, and compared with pericardial cusp patch. without sinus implanted in 5 dogs. Right ventriculography in the cases of the monocusp patch with sinus showed an enough size at the part of the reconstructed outflow tract, while in the cases of the monocusp patch without sinus showed the shape of the slow curve at the part of the reconstructed outflow tract. Both cusps with sinus and without revealed a good mobility, but the former already exhibited semiclosure of the cusp in the end systolic phase of the right ventricle, while the latter began the closure of the cusp in the mid diastolic phase. Then, pulmonary arteriography showed that there was little pulmonary insufficiency in the casesof the monocusp patchwith sinus, but there was moderate pulmonary insufficiency in the cases of the monocusp without sinus.