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Acebutolol overdose resulting in fatalities
1Consultant to the National Capital (Washington, DC) and Maryland (Baltimore) Poison Centers, Department of Emergency Medicine, Georgetown University Hospital, Washington, DC, USA.
The Journal of Emergency Medicine
|March 24, 2000
Summary
Acebutolol overdose is highly lethal, causing QTc prolongation and ventricular tachycardia. Early identification and treatment are crucial for managing this severe beta blocker intoxication.
Area of Science:
- Cardiology
- Pharmacology
- Toxicology
Background:
- Beta blockers are widely prescribed cardiovascular medications.
- Overdose of beta blockers can lead to severe toxicity.
- Acebutolol is a cardioselective beta blocker with intrinsic sympathomimetic activity.
Observation:
- Two fatal cases of acebutolol intoxication were analyzed.
- Clinical presentation included membrane-stabilizing activity.
- Significant QTc prolongation and ventricular tachycardia were observed.
Findings:
- Acebutolol intoxication exhibits unique characteristics compared to other beta blockers.
- Ventricular repolarization abnormalities are prominent in severe acebutolol overdose.
- Literature review indicates acebutolol may be the most toxic beta blocker in overdose.
Implications:
- Findings highlight the potential lethality of acebutolol overdose.
- Understanding these specific toxic effects is vital for clinical management.
- Improved diagnostic and therapeutic strategies are needed for acebutolol toxicity.