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Habitual dietary phosphorus intake and urinary excretion in chronic kidney disease patients: a 3-day observational study

European Journal of Clinical Nutrition volume 71, pages 798–800 (2017)Cite this article

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Abstract

Hyperphosphatemia in chronic kidney disease (CKD) is associated with vascular calcification, cardiovascular morbidity and mortality. The aim of this study was to estimate the daily dietary phosphorus intake compared with recommendations in CKD patients and to evaluate the reproducibility of the 24-h urinary phosphorus excretion. Twenty CKD patients stage 3–4 from the outpatient clinic, collected 24-h urine and kept dietary records for 3 consecutive days. The mean daily phosphorus intake was 1367±499, 1642±815 and 1426±706 mg/day, respectively (P=0.57). The mean urinary phosphorus excretion was 914±465, 954±414 and 994±479 mg/day, respectively (P=0.21). In this population of CKD patients stage 3–4 the daily phosphorus intake was above the recommended. Twenty-four-hour urinary phosphorus excretion was reproducible and the data indicate that a single 24-h urine collection is sufficient to estimate the individual phosphorus excretion.

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Authors and Affiliations

  1. Department of Nephrology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark

    L Salomo, A-L Kamper, G M Poulsen & M Rix

  2. Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark

    L Salomo, S K Poulsen & A Astrup

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  1. L Salomo
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  2. A-L Kamper
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  3. G M Poulsen
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  4. S K Poulsen
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  5. A Astrup
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  6. M Rix
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Correspondence to L Salomo.

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The authors declare no conflict of interest.

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Author contributions

LS, MR and AK designed the research. LS, GMP and AK conducted the research. All authors analyzed and interpreted the data. LS and MR wrote the paper and had primary responsibility for final content. All authors contributed to the revision and final approval of the paper.

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Salomo, L., Kamper, AL., Poulsen, G. et al. Habitual dietary phosphorus intake and urinary excretion in chronic kidney disease patients: a 3-day observational study. Eur J Clin Nutr 71, 798–800 (2017). https://doi.org/10.1038/ejcn.2016.247

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  • DOI: https://doi.org/10.1038/ejcn.2016.247

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