Acute toxicity of pyrazolones.

Area of Science:

• Toxicology
• Pharmacology

Background:

• Pyrazolone analgesics are common causes of mild poisoning.
• Severe pyrazolone intoxication, though rare, can be life-threatening.

Purpose of the Study:

• To review the clinical features and treatment of severe pyrazolone intoxication.
• To evaluate the potential role of hemoperfusion in managing severe cases.

Main Methods:

• Literature review of severe pyrazolone poisoning cases.
• Analysis of clinical symptoms, toxicity profiles, and treatment options.
• Assessment of hemoperfusion efficacy based on pharmacokinetic data and in vitro trials.

Main Results:

• Aminopyrine and propyphenazone cause severe intoxication with symptoms like coma, convulsions, and shock.
• Liver damage can occur, particularly with phenylbutazone and oxyphenbutazone.
• Hemoperfusion with amberlite XAD-4 resin is suggested as an effective treatment for severe pyrazolone poisoning.

Conclusions:

• Severe pyrazolone intoxication requires prompt supportive care and decontamination.
• Hemoperfusion is a promising therapeutic option for severe cases, warranting further clinical investigation.