Related Experiment Videos
Acute clozapine overdose: plasma concentration and outcome
K Broich1, S Heinrich, A Marneros
1Department of Psychiatry and Psychotherapy, Martin-Luther-University Halle-Wittenberg, Halle/Saale, Germany.
Pharmacopsychiatry
|October 1, 1998
Summary
A young woman survived a massive clozapine overdose, experiencing only mild symptoms despite extremely high plasma levels. This case highlights the variable toxicity of clozapine (an atypical neuroleptic) and suggests high doses may not always be lethal.
Area of Science:
- Pharmacology
- Toxicology
- Psychiatry
Background:
- Clozapine is an atypical neuroleptic used for treating psychotic disorders.
- High doses of clozapine can lead to significant toxicity.
- Understanding the clinical presentation and outcomes of clozapine overdose is crucial for patient management.
Observation:
- A 19-year-old female with schizophrenia ingested 5000 mg of clozapine.
- Initial clozapine plasma levels were markedly elevated at 3.8 microg/ml.
- Despite the high concentration, the patient presented with somnolence, agitation, and mild anticholinergic effects.
Findings:
- The patient's symptoms were less severe than expected for such a high clozapine level.
- Gastric lavage and pyridostigmine administration led to stabilization.
- Plasma clozapine levels normalized within 24 hours, with no late-onset complications.
Implications:
- Clozapine intoxication exhibits variable clinical manifestations and toxicity.
- Extremely high plasma clozapine concentrations are not invariably fatal.
- Clinical monitoring and supportive care are essential in managing clozapine overdose.