Risk factors contributing to hepatic artery thrombosis following living-donor liver transplantation

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Abstract
This study was carried out to investigate the risk factors contributing to hepatic artery thrombosis in living-donor liver transplantation. Two hundred and twenty-two recipients (113 adults and 109 children) of living-donor liver transplantation were the subjects of this study. The diagnosis of hepatic artery thrombosis was made by color-Doppler ultrasonography and/or hepatic angiography. Parameters for this study were: (1) donor sex, age, and body weight; (2) recipient sex, age, body weight, liver disease, preoperative prothrombin time, and type of arterial reconstruction; and (3) previous liver transplantation. Hepatic artery thrombosis occurred in 12 patients (5.4%) at 3 to 15 days posttransplant. Recipient female sex and metabolic disorder as the original disease were found to be significantly associated with hepatic artery thrombosis. The 5-year patient survival rate in recipients with hepatic artery thrombosis (58.3%) was significantly lower than that in recipients without this complication (84.4%). Female sex and metabolic disease may be factors contributing to hepatic artery thrombosis after living-donor liver transplantation. More intensive anticoagulation therapy for this patient population might decrease the incidence of hepatic artery thrombosis and, thus, posttransplant recipient mortality.

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