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Nutrients 2017, 9(2), 152; doi:10.3390/nu9020152

Diabetes Mellitus and Younger Age Are Risk Factors for Hyperphosphatemia in Peritoneal Dialysis Patients

1
Department of Medicine, University of Ottawa, Ottawa, ON K1N 6N5, Canada
2
School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa Hospital Research Institute, Clinical Epidemiology Program, Ottawa, ON K1Y 4E9, Canada
3
Department of Medicine, Division of Nephrology, Ottawa Hospital, University of Ottawa, Kidney Research Centre, Ottawa Hospital Research Institute, Ottawa, ON K1H 7W9, Canada
4
Ottawa Hospital Academic Family Health Team, Ottawa Hospital, Ottawa, ON K1Y 4K7, Canada
*
Author to whom correspondence should be addressed.
Received: 23 October 2016 / Revised: 27 January 2017 / Accepted: 13 February 2017 / Published: 17 February 2017
(This article belongs to the Special Issue Nutrition and Chronic Kidney Disease)
View Full-Text   |   Download PDF [241 KB, uploaded 17 February 2017]

Abstract

Hyperphosphatemia has been associated with adverse outcomes in patients with end stage kidney disease (ESKD). The purpose of this study was to determine risk factors for hyperphosphatemia in ESKD patients treated with peritoneal dialysis (PD). This information will be used to develop a patient specific phosphate binder application to facilitate patient self-management of serum phosphate. Adult PD patients documented their food, beverage, and phosphate binder intake for three days using a dietitian developed food journal. Phosphate content of meals was calculated using the ESHA Food Processor SQL Software (ESHA Research, Salem, UT, USA). Clinic biochemistry tests and an adequacy assessment (Baxter Adequest program) were done. Univariate logistic regression was used to determine predictors of serum phosphate >1.78 mmol/L. A multivariable logistic regression model was then fit including those variables that achieved a significance level of p < 0.20 in univariate analyses. Sixty patients (38 men, 22 women) completed the protocol; they were 60 ± 17 years old, 50% had a history of diabetes mellitus (DM) and 33% had hyperphosphatemia (PO4 > 1.78 mmol/L). In univariate analysis, the variables associated with an increased risk of hyperphosphatemia with a p-value < 0.2 were male gender (p = 0.13), younger age (0.07), presence of DM (0.005), higher dose of calcium carbonate (0.08), higher parathyroid serum concentration (0.08), lower phosphate intake (0.03), lower measured glomerular filtration rate (0.15), higher phosphate excretion (0.11), and a higher body mass index (0.15). After multivariable logistic regression analysis, younger age (odds ratio (OR) 0.023 per decade, 95% confidence interval (CI) 0.00065 to 0.455; p = 0.012), presence of diabetes (OR 11.40, 95 CI 2.82 to 61.55; p = 0.0003), and measured GFR (OR 0.052 per mL/min decrease; 95% CI 0.0025 to 0.66) were associated with hyperphosphatemia. Our results support that younger age and diabetes mellitus are significant risk factors for hyperphosphatemia. These findings warrant further investigation to determine the potential mechanisms that predispose younger patients and those with DM to hyperphosphatemia. View Full-Text
Keywords: peritoneal dialysis; hyperphosphatemia; phosphate binders; diabetes mellitus peritoneal dialysis; hyperphosphatemia; phosphate binders; diabetes mellitus
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Imtiaz, R.; Hawken, S.; McCormick, B.B.; Leung, S.; Hiremath, S.; Zimmerman, D.L. Diabetes Mellitus and Younger Age Are Risk Factors for Hyperphosphatemia in Peritoneal Dialysis Patients. Nutrients 2017, 9, 152.

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