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Related Experiment Videos

[Hypophosphatemia in dialysis units].

M Albalate1, E Gruss, J Hernández

  • 1Centro de Diálisis Santa Engracia, Fundación Renal Iñigo Alvarez de Toledo, Instituto Reina Sofía de Investigación (IRSIN), Madrid. sengracia@friat.es

Nefrologia : Publicacion Oficial De La Sociedad Espanola Nefrologia
|August 2, 2003
PubMed
Summary

Hypophosphatemia (low phosphate levels) is common in hemodialysis patients, often linked to poor diet and low vitamin D. Treatment involves dietary changes and supplements, effectively resolving the condition.

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Area of Science:

  • Nephrology
  • Internal Medicine
  • Clinical Nutrition

Background:

  • Hypophosphatemia (Hf) is considered infrequent in chronic hemodialysis (HD) patients.
  • Defining Hf as serum phosphorus < 2.5 mg/dL, this study investigates its occurrence in an HD unit.

Purpose of the Study:

  • To describe the incidence, etiology, symptoms, and treatment of hypophosphatemia in chronic hemodialysis patients.
  • To differentiate between recurrent and isolated episodes of Hf and their associated factors.

Main Methods:

  • Retrospective study over three years analyzing 149 HD patients.
  • Identified 22 cases of Hf, categorizing them into recurrent (Group A) and isolated (Group B) episodes.
  • Analyzed plasma calcium, phosphorus, albumin, and normalized protein catabolic rate (nPCR) between groups.

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Main Results:

  • 22 cases of Hf occurred in 11 out of 149 patients.
  • Group A (recurrent Hf) showed significantly lower plasma Ca, P, Albumin, and nPCR compared to Group B (isolated Hf).
  • Etiologies included low-protein diet, alcoholism, decreased dietary intake, antacids, phosphate binders, and phosphorus restriction; secondary hyperparathyroidism was noted in three patients.

Conclusions:

  • Hypophosphatemia is not as rare as previously thought in hemodialysis patients.
  • Sustained Hf can occur with low-protein diets and low vitamin D levels.
  • Decreased dietary intake is a frequent cause of occasional, symptomatic Hf, even with secondary hyperparathyroidism.