Elsevier

Transplantation Proceedings

Volume 43, Issue 6, July–August 2011, Pages 2208-2210
Transplantation Proceedings

Kidney
Complication: Metabolic problem
Early Prediction of New-Onset Diabetes Mellitus by Fifth-Day Fasting Plasma Glucose, Pulse Pressure, and Proteinuria

https://doi.org/10.1016/j.transproceed.2011.05.005Get rights and content

Abstract

Renal transplant recipients are at high risk of cardiovascular disease (CVD). New-onset diabetes mellitus after transplantation (NODAT) contributes to the risk of CVD, reducing graft and patient survival. To improve outcome of kidney transplant recipients, it is of great interest to identify those patients who will develop NODAT. The aim of our study was to explore the predictive value of fifth-day fasting plasma glucose (FPG), third-month proteinuria, and pulse pressure (PP) for NODAT development. We analyzed 282 non-previously-diabetic kidney transplants in our center. Fifth-day FPG, PP, and third-month 24-hour proteinuria were collected. NODAT was defined at month 12 according to the “consensus guidelines”: symptoms of diabetes plus casual glucose concentrations ≥ 200 mg/dL or FPG ≥ 126 mg/dL. Some 46 patients (16.3%) developed NODAT at month 12. Fifth-day FPG (133 ± 35 vs 108 ± 16 mg/dL, P < .001) and PP (57 ± 17 vs 49 ± 15 mm Hg, P = .007) were significantly higher in patients at risk for NODAT, but there was no difference in third-month proteinuria (652 ± 959 vs 472 ± 1336 mg, P = .390). A multivariate regression model showed an increased risk for NODAT associated with recipient age, body mass index, smoking habit, and a fifth-day FPG ≥ 126 mg/dL (relative risk 4.784, 95% confidence interval 2.121–10.788, P = .0002). The negative predictive value of a fifth-day FPG ≥ 126 mg/dL for predicting 1-year NODAT was 89.4%. Fifth-day FPG was independently related to NODAT development. The detection of a fifth-day FPG ≥ 126 mg/dL increases the risk of suffering NODAT more than 4 times. Fifth-day FPG < 126 mg/dL allows us to identify a transplant population with a low risk (near 10%) for NODAT.

Section snippets

Methods

We retrospectively analyzed 282 non-previously-diabetic kidney transplants between 2002 and 2008 in our center. Only grafts with a survival higher than 1 year were selected. Available data included donor and recipient ages, recipient gender, family history of type 2 diabetes mellitus, dialysis type, pretransplant hepatitis C seropositivity, previous smoking habit, immunosuppressive therapy, biopsy-proven acute rejection, and body mass index. Different immunosuppressive drug regimens were used

Results

Some 46 patients (16.3%) developed NODAT at month 12. In univariate analysis, patients who developed NODAT were significantly older, received a graft from an older donor, had a higher body mass index, and more frequently showed a positive family history of diabetes and smoking habit compared with recipients who remained free of NODAT. Fifth-day FPG and PP were significantly higher in patients at risk for NODAT, but there was no difference in third-month proteinuria (Table 1).

Discussion

This single-center study demonstrated that fifth-day FPG, but neither PP nor proteinuria, can independently identify patients at risk for NODAT. By contrast, Roland et al reported that both proteinuria lower than 1 g/d and PP were independent risk factors for long-term NODAT (hazard ratio [HR] 2.04, P = .004; HR 1.26, P = .0002, respectively). The association between proteinuria and NODAT may be due to the fact that patients with metabolic syndrome are more prone to having proteinuria. The

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