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The association between geriatric nutritional risk index variability and mortality in peritoneal dialysis patients
Filiz Yıldırım1, Ozcan Uzun1, Guler Nasuhbeyoglu1
1Department of Internal Medicine, Division of Nephrology, Dokuz Eylul University Faculty of Medicine, Izmir, Turkey.
Background:
The objective of this study is to examine the association between the Geriatric Nutritional Risk Index (GNRI) and overall mortality in this population.
Methods:
GNRI values were calculated by using the serum albumin levels and body weight and the GNRI variability reflects the changes in GNRI change slopes in the follow-up.
Results:
GNRI values showed a decrease from the median baseline GNRI of 106.3 (IQR, 95.0,113.4) to 98.4 (interquartile range [IQR], 91.9108.9) (p < 0.001). The median GNRI variability was 4.7 (IQR, 2.5, 10.3). Both baseline GNRI levels (adjusted odds ratio [OR]: 0.96, 95% confidence interval [CI]: 0.93, 0.99, p = 0.04) and more profoundly GNRI variability (adjusted OR: 1.23, 95% CI: 1.01, 1.44, p = 0.03) were independently associated with mortality.
Conclusion:
The monitorization of the changes in GNRI values as a variability index is an easy tool that might improve the predictive accuracy of mortality in peritoneal dialysis patients.
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