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Thursday, March 14, 2013

Risks and Benefits of Preemptive Second Kidney Transplantation [feedly]


Risks and Benefits of Preemptive Second Kidney Transplantation
imageBackground: Information to guide the timing of a second kidney transplantation is limited. Methods: We compared outcomes of 3509 preemptive and 14,075 nonpreemptive second kidney transplant recipients in the U.S. Renal Data System between 1995 and 2007. Results: Preemptive recipients had less acute rejection (12% vs. 16%; P<0.0001) and delayed graft function (8% vs. 23%; P<0.0001). Preemptive transplantation was associated with a lower multivariate adjusted risk of allograft failure from any cause including death (hazard ratio [HR], 0.88; 95% confidence interval [95% CI], 0.81–0.96) and death with a functioning graft (HR [95% CI], 0.76 [0.66–0.87]) but a similar risk of death-censored graft loss (HR [95% CI], 0.98 [0.88–1.08]). The benefits of preemptive transplantation were evident in all patients groups with first transplant survival equal to or more than 1 year; however, a 34% increased risk of death-censored graft loss was observed in preemptive recipients when first transplant survival was less than 1 year. Conclusions: Benefits and risks of preemptive transplantation vary between primary and second transplant recipients. Benefits in second transplant recipients are primarily due to decreased death with a functioning graft, with no difference in death-censored graft survival. Preemptive transplantation was beneficial when first transplant survival was equal to or more than 1 year but associated with increased risk when graft survival was less than 1 year.


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