A thirty percent chronic decline in inverse serum creatinine is an excellent predictor of late renal allograft failure

被引:58
作者
Kasiske, BL
Andany, MA
Danielson, B
机构
[1] Hennepin Cty Med Ctr, Dept Med, Minneapolis, MN 55415 USA
[2] Hosp Juan Canalejo, La Coruna, Spain
关键词
chronic allograft nephropathy; cyclosporine (CsA); creatinine; inverse creatinine; creatinine clearance (C-cr); renal allograft function; graft failure;
D O I
10.1053/ajkd.2002.31996
中图分类号
R5 [内科学]; R69 [泌尿科学(泌尿生殖系疾病)];
学科分类号
1002 ; 100201 ;
摘要
We previously reported that the percentage of change In inverse serum creatinine (Delta1/Cr) was the best of several time-dependent serum creatinine-derived predictors of renal allograft failure In patients not administered cyclosporine (CsA). To further validate the utility of Delta1/Cr, we collected creatinine levels (mean, 90.7 +/- 45.2 creatinine measurements) in 100 patients treated for 6.7 +/- 5.9 years with CsA. We also validated Delta1/Cr using a limited creatinine-sampling strategy, then performed multivariate Cox proportional hazards analysis of 1,663 transplantations. A time-dependent covariate determined by the date of first chronic decline (excluding creatinine levels from periods of acute rejection) in Delta1/Cr to less than -30% of baseline similarly was predictive of graft failure in 101 patients treated without CsA (relative risk, 5.04; 95% confidence Interval, 2.18 to 11.6; P = 0,0002) and 100 patients treated with CsA (relative risk, 5.02; 95% confidence interval, 2.50 to 10.1; P < 0.0001). A limited creatinine-sampling strategy (measured at 1 week, 1, 3, 6,12,18, 24, and 36 months, and each year thereafter) reduced the ability of Delta1/Cr less than -30% to predict graft failure. In 1,663 patients, Delta1/Cr less than -30% first occurred a median of 1.0 years posttransplantation (n = 792 of 1,663 patients) and 3.0 years before graft failure (n = 478 of 897 patients with graft failure). In a multivariate model (n = 1,663) that included baseline function, acute rejection, and other covariates, Delta1/Cr less than -30% was a strong independent predictor of graft failure (relative risk, 2.56; 95% confidence interval, 2.12 to 3.09; P < 0.0001). Thus, Delta1/Cr less than -30% is an excellent predictor of graft failure that is similarly predictive in patients treated with and without CsA. A limited sampling strategy for creatinine diminishes, but does not negate, the usefulness of Delta1/Cr less than -30%. (C) 2002 by the National Kidney Foundation, Inc.
引用
收藏
页码:762 / 768
页数:7
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