In overdose decontamination, which method is most commonly used?

In overdose decontamination, which method is most commonly used?

• A. Activated charcoal
• B. Gastric lavage
• C. Whole bowel irrigation
• D. Induced emesis

Answer: (A)

In overdose decontamination, the goal is to limit how much toxin is absorbed from the gut by binding it in the gastrointestinal tract. Activated charcoal is the most commonly used method because it has a very large surface area that effectively adsorbs many drugs and toxins when given soon after ingestion. Administered orally or via a tube, it can significantly reduce systemic absorption if given within about an hour (and in some cases may be repeated for certain substances). It’s generally well tolerated and practical in the emergency setting, making it the default choice for many oral poisonings. However, not all substances bind well to charcoal—it’s less effective for caustics, heavy metals (like iron), alcohols, and certain hydrocarbons—and it requires that the patient’s airway be protected to avoid aspiration. If the patient is drowsy or unable to protect their airway, administration is avoided or accompanied by intubation. Other methods, such as gastric lavage, whole bowel irrigation, or induced emesis, are reserved for specific situations and carry more risks or limited usefulness, which is why they’re not the routine choice.

In overdose decontamination, the goal is to limit how much toxin is absorbed from the gut by binding it in the gastrointestinal tract. Activated charcoal is the most commonly used method because it has a very large surface area that effectively adsorbs many drugs and toxins when given soon after ingestion. Administered orally or via a tube, it can significantly reduce systemic absorption if given within about an hour (and in some cases may be repeated for certain substances). It’s generally well tolerated and practical in the emergency setting, making it the default choice for many oral poisonings.

However, not all substances bind well to charcoal—it’s less effective for caustics, heavy metals (like iron), alcohols, and certain hydrocarbons—and it requires that the patient’s airway be protected to avoid aspiration. If the patient is drowsy or unable to protect their airway, administration is avoided or accompanied by intubation. Other methods, such as gastric lavage, whole bowel irrigation, or induced emesis, are reserved for specific situations and carry more risks or limited usefulness, which is why they’re not the routine choice.