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  • Title: Events in procurement as risk factors for ischemic cholangiopathy in liver transplantation using donation after cardiac death donors.
    Author: Taner CB, Bulatao IG, Willingham DL, Perry DK, Sibulesky L, Pungpapong S, Aranda-Michel J, Keaveny AP, Kramer DJ, Nguyen JH.
    Journal: Liver Transpl; 2012 Jan; 18(1):100-11. PubMed ID: 21837741.
    Abstract:
    The use of donation after cardiac death (DCD) liver grafts is controversial because of the overall increased rates of graft loss and morbidity, which are mostly related to the consequences of ischemic cholangiopathy (IC). In this study, we sought to determine the factors leading to graft loss and the development of IC and to compare patient and graft survival rates for recipients of DCD liver grafts and recipients of donation after brain death (DBD) liver grafts in a large series at a single transplant center. Two hundred liver transplants with DCD donors were performed between 1998 and 2010 at Mayo Clinic Florida. Logistic regression models were used in the univariate and multivariate analyses of predictors for the development of IC. Additional analyses using Cox regression models were performed to identify predictors of graft survival and to compare outcomes for DCD and DBD graft recipients. In our series, the patient survival rates for the DCD and DBD groups at 1, 3, and 5 years was 92.6%, 85%, and 80.9% and 89.8%, 83.0%, and 76.6%, respectively (P = not significant). The graft survival rates for the DCD and DBD groups at 1, 3, and 5 years were 80.9%, 72.7%, and 68.9% and 83.3%, 75.1%, and 68.6%, respectively (P = not significant). In the DCD group, 5 patients (2.5%) had primary nonfunction, 7 patients (3.5%) had hepatic artery thrombosis, and 3 patients (1.5%) experienced hepatic necrosis. IC was diagnosed in 24 patients (12%), and 11 of these patients (5.5%) required retransplantation. In the multivariate analysis, the asystole-to-cross clamp duration [odds ratio = 1.161, 95% confidence interval (CI) = 1.021-1.321] and African American recipient race (odds ratio = 5.374, 95% CI = 1.368-21.103) were identified as significant factors for predicting the development of IC (P < 0.05). This study has established a link between the development of IC and the asystole-to-cross clamp duration. Procurement techniques that prolong the nonperfusion period increase the risk for the development of IC in DCD liver grafts.
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