Fenfluramine poisoning

Area of Science:

• Toxicology
• Clinical Pharmacology

Background:

• Fenfluramine, an appetite suppressant, has been associated with serious adverse effects.
• Understanding the clinical presentation and management of fenfluramine intoxication is critical for emergency medicine.

Purpose of the Study:

• To describe the clinical syndrome of fenfluramine intoxication.
• To outline recommended management strategies for fenfluramine overdose.

Main Methods:

• Review of 53 cases of fenfluramine intoxication, including 15 from existing literature.
• Analysis of patient data regarding dosage, symptoms, and outcomes.

Main Results:

• Lethality observed in 10 cases with doses ranging from 28.7--70 mg/kg.
• Cardiac arrest occurred in 9 fatal cases within 1-4 hours post-ingestion.
• Common symptoms include mydriasis, tachycardia, facial rubor, coma, and convulsions at higher doses.

Conclusions:

• Fenfluramine intoxication presents with a distinct clinical syndrome characterized by neurological and cardiovascular signs.
• Early supportive care, including gastric lavage, activated charcoal, and pharmacologic interventions for specific symptoms, improves outcomes.
• Survival beyond 4 hours suggests a more favorable prognosis, necessitating continued supportive therapy.