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  • Title: "V-Plasty" technique using dual synthetic vascular grafts to reconstruct outflow channel in living donor liver transplantation.
    Author: Jeng LB, Thorat A, Li PC, Li ML, Yang HR, Yeh CC, Chen TH, Hsu CH, Hsu SC, Poon KS.
    Journal: Surgery; 2015 Nov; 158(5):1272-82. PubMed ID: 25920910.
    Abstract:
    BACKGROUND: The reconstruction of outflow is a crucial step in living donor liver transplantation. This study describes a suitable technique that uses synthetic vascular conduits in presence of multiple draining veins of right lobe of liver and the outcome of the recipients to evaluate safety of using multiple synthetic grafts. METHODS: From March 2011 to September 2014, 325 patients underwent right lobe living donor liver transplantation. Expanded polytetra-fluoroethylene (ePTFE) grafts were used in total 155 of the liver allografts. Among these, 16 liver grafts required dual ePTFE grafts to reconstruct the outflow due to presence of multiple hepatic veins. RESULTS: The mean diameters for venous branches of segment 5 (V5) and 8 (V8) were 5 mm (range, 4-8 mm) and 7 mm (range, 5-9 mm). The mean diameter of inferior right hepatic veins was 8 mm (7-10 mm). All the recipients who received the right liver with dual ePTFE grafts showed satisfactory inflow and outflow immediately after reconstruction as measured by Doppler flowmetry. Postoperative ultrasonographic studies showed no disturbances in outflow. Protocol dynamic computed tomography performed in the second postoperative month showed 100% patency rates of the artificial grafts. At median follow-up of 24 months graft survival was achieved in 88%, whereas the patency rates of the ePTFE grafts were 100%. CONCLUSION: The use of "V-Plasty" technique using dual artificial vascular grafts is a safe and feasible technique in the presence of various allograft venous anomalies & ensures a single venous channel for outflow reconstruction. Our study also suggests that ePTFE graft may be a useful interposition material without serious complications.
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