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Baclofen overdose treated with continuous venovenous hemofiltration.

Didier Meulendijks1, Saheed Khan, Cornelis H W Koks

  • 1Division of Clinical Pharmacology, Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.

European Journal of Clinical Pharmacology
|January 9, 2015
PubMed
Summary

Continuous venovenous hemofiltration (CVVH) effectively removed baclofen in an overdose case, significantly increasing drug clearance. This suggests CVVH is a viable alternative to hemodialysis for managing baclofen toxicity.

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Area of Science:

  • Pharmacology
  • Nephrology
  • Toxicology

Background:

  • Baclofen overdose can cause severe central nervous system and respiratory depression.
  • Baclofen has a prolonged elimination half-life, complicating overdose management.
  • While hemodialysis aids baclofen clearance, the efficacy of continuous venovenous hemofiltration (CVVH) remains uncertain.

Observation:

  • A patient experiencing acute baclofen overdose was treated with CVVH.
  • Pharmacokinetic analysis of baclofen in serum and hemofiltrate was performed.
  • Data were analyzed using non-compartmental methods to determine clearance contributions.

Findings:

  • Serum baclofen concentrations ranged from 1.81 to 0.05 mg/L.
  • Hemofiltrate baclofen levels mirrored serum concentrations, indicating efficient removal.
  • The elimination half-life during CVVH was approximately 4.8 hours.
  • CVVH increased total baclofen clearance by an estimated 57%.

Implications:

  • Continuous venovenous hemofiltration (CVVH) is effective for treating baclofen overdose.
  • CVVH offers a valuable alternative to hemodialysis for baclofen toxicity management.
  • This case supports the use of CVVH in critical care settings for drug overdose.