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  • Title: [Liver transplantation in end-stage liver disease with portal vein thrombosis].
    Author: Wu G, Liu YF, Liu SR, Zhang JL, Chen XC, Cheng DH.
    Journal: Zhonghua Wai Ke Za Zhi; 2009 Apr 15; 47(8):590-3. PubMed ID: 19595038.
    Abstract:
    OBJECTIVE: To summarize the experience in the managements of portal vein thrombosis (PVT) and to evaluate the impact of PVT on intraoperative course and postoperative outcome in liver transplantation. METHODS: Between May 1995 and September 2007, 194 orthotopic liver transplantations were performed, of which 24 cases presented portal vein thrombosis. There were 12 patients with grade I, 9 with grade II, 2 with grade III and 1 with grade IV. The management of PVT depended mainly on its extent. Ligation of the collateral circulation, especially spontaneous or surgical splenorenal shunt, was made as approaches to improve portal flow.Heparin or low-molecule-weight heparin as a prophylactic anticoagulation therapy was maintained during and after operation if prothrombin time is less than eighteen seconds. Follow-up Doppler ultrasonography was used daily in the early postoperative period. Risk factors and variables associated with the transplant and the post-transplant period were analyzed and compared with 170 patients transplanted without PVT. RESULTS: Surgical techniques were eversion thromboendovenectomy in 21 patients with PVT grades I and II, extra-anatomic mesenteric graft in 2 with grade III, and anastomosis to a collateral vein in 1 with grade IV. The study demonstrated more RBC transfusions [(15.2 +/- 11.8) U vs. (8.6 +/- 6.6) U, P = 0.006], longer surgery procedures [(492 +/- 89) min vs. (403 +/- 105) min, P = 0.001] and hospital stay [(32.4 +/- 13.5) d vs. (22.1 +/- 9.1) d, P = 0.001] in the PVT group. However, there were no differences in overall morbidity (58.3% vs. 50.6%, P = 0.478), hospital mortality (8.3% vs.6.5%, P = 0.73) and 1-year survival (87.5% vs. 89.4%, P = 0.778). The incidence of rethrombosis was higher in the PVT group (8.3% vs.1.2%, P = 0.021). Two cases rethrombosis were successfully cured by percutaneous thrombolysis, balloon angioplasty, and stent placement. CONCLUSION: Portal thrombosis is associated with greater operative complexity and rethrombosis, but has no influence on overall morbidity and mortality in liver transplantation.
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