New developments in the therapy of intoxications

Area of Science:

• Clinical Toxicology
• Evidence-Based Medicine
• Pharmacology

Background:

• Clinical management of poisoned patients has evolved significantly over the past decade.
• Traditional interventions like emesis and gastric lavage are now considered passé.
• Evidence-based medicine necessitates re-evaluation of standard poisoning therapies.

Purpose of the Study:

• To review the efficacy of traditional gastrointestinal decontamination methods in managing poisoned patients.
• To evaluate the role of activated charcoal, cathartics, and whole bowel irrigation.
• To highlight the importance and emerging use of specific antidotes in modern toxicology.

Main Methods:

• Literature review of published studies on gastrointestinal decontamination and antidote efficacy.
• Analysis of evidence regarding the effectiveness of emesis, gastric lavage, activated charcoal, cathartics, and whole bowel irrigation.
• Examination of the clinical application and outcomes associated with specific antidotes.

Main Results:

• Emesis and gastric lavage do not alter patient outcomes and are largely abandoned.
• Activated charcoal's effectiveness diminishes significantly over time; no studies show it changes patient outcomes.
• Cathartics are ineffective and potentially dangerous; whole bowel irrigation is not routinely indicated.
• Multiple dose activated charcoal and urinary alkalinization have limited usefulness.
• Specific antidotes, such as N-acetylcysteine, naloxone, flumazenil, fomepizole, and Crotalidae Polyvalent Immune Fab (Ovine), are crucial for targeted treatment.

Conclusions:

• Traditional gastrointestinal decontamination methods are largely ineffective for poisoned patients.
• The focus of poisoning management has shifted towards specific antidotes tailored to the intoxication agent.
• While few antidotes are consistently used, their judicious application is vital for improving patient outcomes and avoiding harm.