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[Intoxication with beta-receptor blockers (author's transl)]
Deutsche Medizinische Wochenschrift (1946)
|July 23, 1982
Summary
Beta-blocker overdoses, whether intentional or accidental, commonly cause cardiovascular issues like bradycardia and hypotension. Treatment involves decontamination and supportive care, with limited effectiveness of atropine and specific indications for other interventions.
Area of Science:
- Pharmacology
- Toxicology
- Emergency Medicine
Background:
- Beta-blockers are frequently involved in intentional overdoses and accidental poisonings, particularly in children.
- Understanding the diverse pharmacodynamics and pharmacokinetics of available beta-blockers is crucial for managing intoxication.
Observation:
- A review of 49 intoxication cases revealed common cardiovascular symptoms including sinus bradycardia, arrhythmia, and hypotension.
- Neurological symptoms such as dizziness, drowsiness, loss of consciousness, and hallucinations were also frequently reported.
- Hypoglycemia was particularly noted in young children experiencing beta-blocker overdose.
Findings:
- No consistent relationship was identified between specific beta-blocker substances and particular symptoms.
- Standard interventions like activated charcoal and sodium sulfate are recommended to interrupt enterohepatic circulation.
- Atropine demonstrated limited efficacy for bradycardia and hypotension; dopamine is recommended for supportive care, and glucagon for shock.
Implications:
- Effective management of beta-blocker overdose requires prompt decontamination and tailored supportive therapies.
- Haemodialysis is rarely indicated and effective only for a limited number of beta-blockers.
- Forced diuresis is not recommended in the management of beta-blocker intoxication.