Abstract
Portal vein problems remain a formidable challenge in liver transplantation. In select situations, a portal vein conduit can provide a solution. No long-term results have been reported. This study was designed to assess the impact of portal vein conduits on graft survival after liver transplantation and the safety of portal vein conduits and to establish the long-term results (up to 20 years) of portal vein conduits. Data from 2370 adult liver transplants were prospectively collected into a computerized research database and analyzed. All portal vein conduits were constructed from the donor iliac vein obtained at the liver retrieval. Portal vein conduits were required in 35 (1.5%) first transplants. The long-term (up to 20 years of follow-up) graft survival after liver transplantation using portal vein conduits was excellent and comparable to that of the control group. The graft survival was 65% with the conduit versus 66% without the conduit at 5 years of follow-up, 58% versus 51% at 10 years, and 48% versus 35% at 15 years. There was a higher rate (8.6% versus 1.4%) of portal vein thrombosis after the portal vein conduit, and the majority occurred in the first 3 months after transplantation. For the same time period, there was no statistically significant difference in graft survival or patient survival for the retransplants with and without portal vein conduits. There was no statistically significant difference in graft survival or patient survival for the transplants with portal vein conduits and with portal vein thrombendvenectomy. In conclusion, portal vein conduits can be used safely for liver transplantation with no negative impact on long-term graft survival or patient survival. Despite the higher rate of portal vein thrombosis in the immediate postoperative period, excellent long-term results can be obtained.
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