Gastric Lavage

Its potential benefit depends on how much of the ingested material remains in the stomach and whether removing that material can meaningfully reduce further absorption. The substance involved, the dose, the time since ingestion, and the degree of gastric retention therefore shape the expected value of treatment. These variables explain why clinicians do not apply the procedure uniformly to every poisoning.

Repeated aliquots allow stomach contents to be progressively diluted, mobilized, and removed rather than relying on a single aspiration. The cycle continues until the recovered material is relatively clear, indicating that less visible gastric content remains. A large-bore orogastric tube supports removal of stomach contents and permits both fluid delivery and aspiration during the process.

Impaired consciousness can prevent a patient from protecting the airway, allowing gastric fluid or toxic material to enter the lungs during the procedure. Aspiration may cause serious complications, so airway protection becomes an essential safety consideration before lavage is undertaken. This risk is a major reason modern toxicology favors selective use instead of routine treatment for every oral overdose.

Gastric lavage is one possible response to selected oral poisonings, but it is not automatically preferred over other approaches. Clinicians weigh its possible reduction in absorption against procedural risks, then consider alternatives such as activated charcoal and supportive care. The choice depends on the ingestion details and the patient’s condition rather than on the overdose label alone.

The assessment should focus on the ingested substance, dose, timing, and whether material is likely to remain in the stomach. Clinicians must also determine whether consciousness is impaired and whether the airway can be protected. Together, these factors connect the pharmacology of the overdose with the procedure’s potential benefit and its risk of serious aspiration.

The recovered gastric return becomes relatively clear after repeated cycles of aspiration, fluid instillation, and withdrawal. This finding suggests that less removable stomach content is present, although the overall value of the intervention still depends on the substance, dose, timing, and retention. A clearer return does not eliminate the need to consider aspiration risk or alternative care.