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Related Experiment Videos

Fatal intoxication by tocainide.

K Sperry1, N Wohlenberg, J C Standefer

  • 1Office of the Medical Investigator for the State of New Mexico, Albuquerque.

Journal of Forensic Sciences
|September 1, 1987
PubMed
Summary
This summary is machine-generated.

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This case study details a fatal tocainide overdose, revealing high serum levels and potential primary myocardiotoxicity in humans. The findings highlight tocainide

Area of Science:

  • Pharmacology
  • Toxicology
  • Clinical Medicine

Background:

  • Tocainide is an oral antiarrhythmic drug.
  • It is chemically similar to lidocaine.
  • This case involves a suicide by overdose.

Observation:

  • A 26-year-old woman ingested a large quantity of tocainide.
  • Analysis confirmed tocainide in blood, vitreous fluid, and bile.
  • Serum tocainide level was 68 mg/L, far exceeding therapeutic range.

Findings:

  • Tocainide overdose presented with ventricular tachyarrhythmias and coma.
  • Animal studies suggest central nervous system toxicity.
  • Human presentation suggests potential primary myocardiotoxicity at high levels.

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Implications:

  • High-level tocainide exposure may cause direct heart damage in humans.
  • This contrasts with known mechanisms in animal models.
  • Further research is needed to clarify tocainide's toxicity profile.