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Related Experiment Videos

[Mannital induced acute renal failure]

J Du1, J Cao, H Zhao

  • 1Department of Neurological Surgery, Xuanwu Hospital, Beijing.

Zhonghua Wai Ke Za Zhi [Chinese Journal of Surgery]
|July 1, 1996
PubMed
Summary

Mannitol can cause acute kidney injury, leading to electrolyte imbalances and increased osmolal gap. Monitoring serum osmolality and sodium levels can prevent mannitol intoxication, with hemodialysis being the primary treatment for this condition.

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Area of Science:

  • Nephrology
  • Clinical Toxicology
  • Internal Medicine

Context:

  • Mannitol, a hyperosmolar agent, is commonly used for various medical indications.
  • Acute renal failure (ARF) is a potential complication associated with mannitol administration.
  • Understanding the biochemical changes and mechanisms underlying mannitol-induced ARF is crucial for patient management.

Purpose:

  • To report and analyze clinical data from 14 cases of mannitol-induced acute renal failure.
  • To investigate the role of serum osmolality and osmolal gap in the pathogenesis of mannitol nephrotoxicity.
  • To identify key biochemical markers and recommend optimal treatment strategies for mannitol-induced ARF.

Summary:

  • Analysis of 14 cases revealed consistent electrolyte disturbances, including decreased serum sodium (Na+) and bicarbonate (HCO3-), and increased potassium (K+) and blood urea nitrogen (BUN).
  • Elevated osmolal gap (average 77.4 mOsm/kg H2O) was observed in cases with measured serum osmolality, suggesting a significant role in inducing renal vasoconstriction and subsequent ARF.
  • Decreased serum Na+ may serve as an early indicator of an increased osmolal gap, signaling potential mannitol intoxication.

Impact:

  • Highlights the importance of monitoring serum osmolality or osmolal gap to prevent mannitol-induced acute renal failure.
  • Suggests that serum sodium levels can act as a warning sign for elevated osmolal gap.
  • Establishes hemodialysis as the preferred treatment modality for managing mannitol-induced acute renal failure.

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