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Fatal thioridazine cardiotoxicity
The Medical Journal of Australia
|August 25, 1979
Summary
A case report details fatal cardiotoxicity from a 5000 mg thioridazine overdose. Documenting serum thioridazine levels during arrhythmia, the study highlights arrhythmias resistant to drug therapy.
Area of Science:
- Pharmacology
- Toxicology
- Cardiology
Background:
- Thioridazine, an antipsychotic, can cause severe cardiotoxicity in overdose.
- Intentional ingestion of high-dose thioridazine presents a significant clinical challenge.
Observation:
- A case of fatal cardiotoxicity following deliberate ingestion of 5000 mg of thioridazine (Melleril) is presented.
- Serum thioridazine levels were measured for the first time concurrently with documented arrhythmia.
Findings:
- The reported arrhythmias were largely refractory to conventional pharmacologic interventions.
- High serum thioridazine concentrations correlated with life-threatening cardiac events.
Implications:
- Transvenous pacing may be a crucial intervention for managing thioridazine-induced arrhythmias.
- This case underscores the critical need for prompt and aggressive management strategies in severe antipsychotic overdoses.