Gut decontamination in the poisoned patient

Area of Science:

• Toxicology
• Emergency Medicine
• Pharmacology

Background:

• Gastrointestinal decontamination aims to reduce poison absorption and toxicity.
• Common methods include orogastric lavage, activated charcoal, and whole-bowel irrigation.
• Rarely, endoscopic retrieval or laparotomy are used for severe ingestions.

Purpose of the Study:

• To review the efficacy and limitations of gastrointestinal decontamination strategies in poisoning management.
• To discuss the evolving understanding of gut decontamination, particularly with activated charcoal.
• To emphasize the importance of individualized risk assessment in clinical decision-making.

Main Methods:

• Review of existing literature on gastrointestinal decontamination modalities.
• Analysis of studies on pharmacobezoars and modified-release formulations.
• Examination of research on gut motility and drug absorption.

Main Results:

• Gastrointestinal decontamination is likely beneficial despite low-quality supporting data.
• Orogastric lavage has complications; activated charcoal has limitations in adsorbing all substances.
• Whole-bowel irrigation requires intact gut motility and is used for specific toxins.

Conclusions:

• The 1-hour timeframe for activated charcoal is obsolete; newer formulations persist longer in the gut.
• Clinicians must assess individual risks and benefits for each poisoning case.
• Choosing the appropriate decontamination method can reduce toxin burden while managing potential complications.