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Related Experiment Videos

Delayed respiratory depression after risperidone overdose.

Ahmet Akyol1, A Can Senel, Hülya Ulusoy

  • 1Department of Anesthesiology and Critical Care, Karadeniz Technical University, Trabzon, Turkey.

Anesthesia and Analgesia
|October 26, 2005
PubMed
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Risperidone overdose can cause delayed respiratory depression, especially in poor metabolizers with CYP2D6 genetic variations. This case highlights the importance of monitoring patients after significant risperidone exposure.

Area of Science:

  • Pharmacology
  • Clinical Toxicology

Background:

  • Risperidone, an atypical antipsychotic, treats schizophrenia by managing positive and negative symptoms.
  • Hepatic metabolism via CYP2D6 converts risperidone to its active metabolite, 9-hydroxyrisperidone.
  • Genetic variations in CYP2D6 affect metabolism, with 6-8% of white individuals being poor metabolizers, leading to extended drug half-lives.

Observation:

  • This report details an unusual case of delayed respiratory depression following an overdose of risperidone.
  • The patient experienced an unexpected and prolonged adverse reaction.
  • The event occurred despite standard initial management protocols.

Findings:

  • The patient's presentation suggests a potential for prolonged drug effects in overdose scenarios.
  • Extended half-lives in poor metabolizers may contribute to delayed toxicity.

Related Experiment Videos

  • Respiratory depression is a critical adverse event associated with antipsychotic overdose.

    • Implications:

    • This case underscores the need for vigilant, extended monitoring of patients after risperidone overdose, particularly those with suspected poor metabolizer status.
    • Understanding genetic influences on drug metabolism is crucial for managing overdose toxicity.
    • Clinical guidelines may need to consider the potential for delayed adverse events in risperidone toxicity management.