Right ventricle to pulmonary artery conduit with tricuspid expanded polytetrafluoroethylene valves.

Abstract Background Excellent outcomes of right ventricle to pulmonary artery conduits with expanded polytetrafluoroethylene valves have been reported. The purpose of this study was to evaluate the outcomes of the different material conduits with tricuspid expanded polytetrafluoroethylene valves. Methods Forty-one consecutive patients who received right ventricle to pulmonary artery conduit with tricuspid expanded polytetrafluoroethylene valves for biventricular repair between April 2004 and December 2016 were studied. The conduits made of autologous pericardial roll or xenograft roll were used in 22 patients (group P) and the conduits made of expanded polytetrafluoroethylene tube were used in 19 patients (group G). The conduit reoperation and the conduit dysfunction were analyzed. Results During the median follow-up of 5.8 years, no death related to the conduit was observed. There were 4 reoperations (3 in group P and 1 in group G). Freedom from conduit reoperation at 5 years was 100% in both groups (p=0.30). Freedom from more than moderate conduit stenosis at 5 years after operation was not significantly different between both groups (46.9% in group P vs. 76.3% in group G; p=0.23) despite the group G conduits were significantly smaller, and freedom from more than moderate conduit regurgitation at 5 years was significantly better in group G (63.3% in group P vs. 94.1% in group G; p=0.04). Conclusions The conduit with expanded polytetrafluoroethylene valves in the expanded polytetrafluoroethylene tubes had better conduit function compared to the conduit with autologous pericardial or xenograft roll, especially in terms of conduit regurgitation.