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Related Experiment Videos

Fatality from olanzapine induced hyperglycemia.

Robert Meatherall1, John Younes

  • 1Laboratory Medicine, St Boniface General Hospital, Winnipeg, Manitoba, Canada.

Journal of Forensic Sciences
|July 26, 2002
PubMed
Summary

Olanzapine, an antipsychotic, may cause severe hyperglycemia and diabetic coma in schizophrenic patients. This case highlights the potential risk of diabetes mellitus associated with olanzapine treatment.

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Area of Science:

  • Pharmacology
  • Endocrinology
  • Psychiatry

Background:

  • Schizophrenia treatment often involves atypical antipsychotics like olanzapine.
  • Atypical antipsychotics, including clozapine and olanzapine, have been linked to metabolic disturbances.
  • Diabetes mellitus is a serious concern in patients with mental health conditions.

Observation:

  • A 31-year-old male with schizophrenia developed severe hyperglycemia after initiating olanzapine treatment.
  • Fasting blood glucose levels rose significantly with increasing olanzapine dosage.
  • The patient exhibited symptoms of polydipsia and polyuria, preceding death from hyperosmolar nonketotic diabetic coma.

Findings:

  • Postmortem analysis revealed extremely high glucose levels in blood, vitreous humor, and urine.
  • Olanzapine was detected at therapeutic levels, with no other substances implicated.
  • Severe dehydration and trace ketones were noted, consistent with the cause of death.

Implications:

  • Olanzapine is strongly suspected as the cause of fatal diabetic coma in this patient.
  • This case underscores the critical need to monitor glucose levels in patients treated with olanzapine.
  • Postmortem toxicology should include vitreous glucose and beta-hydroxybutyrate analysis for olanzapine or clozapine cases.

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