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Sodium balance in renal failure

D Shemin1, L D Dworkin

  • 1Department of Medicine, Rhode Island Hospital, Providence 02903, USA.

Current Opinion in Nephrology and Hypertension
|March 1, 1997
PubMed
Summary

Patients with renal failure adapt sodium excretion, but advanced stages require interventions like dialysis to manage fluid overload and hypertension. Sodium balance is crucial in kidney disease management.

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Area of Science:

  • Nephrology
  • Renal Physiology
  • Cardiovascular Endocrinology

Background:

  • Sodium balance is complex in renal failure, influenced by disease severity.
  • Progressive chronic kidney disease involves adaptive increases in per-nephron sodium excretion.
  • Natriuretic peptides play a role, but exogenous administration is inconsistently effective.

Purpose of the Study:

  • To summarize the understanding of sodium balance in renal failure.
  • To discuss the role of natriuretic peptides in renal sodium excretion.
  • To highlight the challenges in managing extracellular volume in end-stage renal disease.

Main Methods:

  • Review of physiological adaptations in renal insufficiency.
  • Analysis of the impact of natriuretic peptides on sodium excretion.
  • Discussion of clinical manifestations and management strategies in advanced renal disease.

Main Results:

  • An adaptive increase in sodium excretion per nephron occurs as glomerular filtration rate declines.
  • Exogenous natriuretic peptides do not consistently enhance sodium excretion in renal disease.
  • Total renal sodium excretion decreases in end-stage renal disease, leading to volume expansion.

Conclusions:

  • Managing extracellular volume, hypertension, and edema in end-stage renal disease is critical.
  • Sodium removal through diuretics or dialysis is essential for normalizing extracellular volume.
  • Understanding sodium handling is key to managing patients with kidney failure.

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