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  • Title: Assessment of kidneys procured from expanded criteria donors before transplantation.
    Author: Domagala P, Kwiatkowski A, Perkowska-Ptasinska A, Wszola M, Panufnik L, Paczek L, Durlik M, Chmura A.
    Journal: Transplant Proc; 2009 Oct; 41(8):2966-9. PubMed ID: 19857651.
    Abstract:
    BACKGROUND: Using expanded criteria donor (ECD) organs is 1 strategy to make more organs available for transplant. To reduce the number of posttransplant complications and failures, there is a need to create a comprehensive system of evaluation before transplantation, especially for kidneys harvested from ECD. The aim of this study was to assess the results of kidneys procured from ECD seeking to discover the most useful factors for kidney evaluation before transplantation. PATIENTS AND METHODS: One hundred seventy-two patients received cadaveric renal transplants between January 1, 2006, and August 31, 2008. We collected data on donors, recipients, and perfusion parameters. We analyzed patient and graft survivals, as well as immediate, delayed, and slow graft function. Kidney recipient function was assessed by serum creatinine concentrations and by creatinine clearance calculated according to the Cockroft-Gault formula. Renal biopsy specimens were obtained in the perioperative periods 147 cases. RESULTS: The overall 1-year graft survival was 86.9%. More than 25% of transplanted kidneys were harvested from ECD. There were no significant differences in patient survival between recipients of standard criteria donor kidneys (RSCDK) versus of expanded criteria donor kidneys (RECDK). One-year graft survival was higher among the RSCDK group than the RECDK group, namely, 94.4% versus 62.5%, (P = .004). There were no differences in the incidence of primary nonfunction or in delayed graft function between the groups. RECDK were more likely to show slow graft function (69.2% vs 37.8%; P = .033). A lower graft survival at 6 months after transplantation was observed among organs harvested from ECD compared with standard criteria donor (SCD) kidneys who showed histologic lesions or a flow at the fourth hour of machine perfusion below 0.4 mL/g. Using a logistic regression model, chronic histologic changes were shown to influence kidney survival at 6 months after transplantation. CONCLUSION: There was no significant difference in patient survival between recipients of kidneys harvested from expanded versus standard criteria donors. ECD kidneys displayed lower graft survival rates. There was no significant difference in the incidence of delayed graft function between recipients of kidneys harvested from expanded versus standard criteria donors. Pretransplant evaluation of ECD kidneys should include 3 variables: donor parameters, histologic findings, and machine perfusion parameters.
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