Kidneys from uncontrolled donors after cardiac death: which kidneys do worse?

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Abstract

Kidneys from uncontrolled donors after cardiac death (DCD) expand the donor pool, but are associated with more primary nonfunction (PNF) and delayed graft function (DGF) compared with more conventional donor kidneys. It remains unclear, which factors influence outcome of uncontrolled donation. Therefore, we studied which donor, graft, and recipient characteristics are associated with PNF in a large cohort study. The association between different characteristics and short-term graft function was analyzed for kidneys procured in the Maastricht region from 1 January 1981 to 1 July 2009. Patients were followed until 7 January 2010. A total of 135 uncontrolled donor kidneys were included in this study. The incidence of PNF and DGF was 22% and 61%, respectively. Increasing donor age is an independent risk factor for graft failure in a univariate analysis (OR 1.035, 95% CI 1.004-1.068, P = 0.028). Donor age remains strongly associated with PNF in a multivariate analysis (OR 1.064, 95% CI 1.013-1.118, P = 0.014). However, the predictive value of donor age alone is poor (AURC 0.640, 95% CI 0.553-0.721). Increasing donor age of uncontrolled DCD donors is a major risk factor for PNF. Other clinically relevant variables were not associated with PNF. Donor age is strongly associated with PNF and remains an important parameter in donor selection.

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