Gastric Lavage for Paraquat Poisoning

Introduction to Paraquat Poisoning Management

The American College of Medical Toxicology recommends against routine gastric lavage for paraquat poisoning, instead considering multiple-dose activated charcoal after airway protection and hemodynamic stabilization 1

Activated charcoal or Fuller's earth are preferred decontamination agents over mechanical gastric lavage, as they work through adsorption of the toxin rather than physical removal 1, 2
Gastric lavage should only be considered in specific cases, such as the earliest phases of certain poisonings, but is not standard for paraquat 3

Remove contaminated clothing immediately and thoroughly wash exposed skin to prevent continued dermal absorption, as recommended by toxicology guidelines 1, 4
Consider multiple-dose activated charcoal (15-20g every 6 hours) only after securing the airway and achieving hemodynamic stability, following the guidance of medical toxicology experts 1
Never attempt decontamination without first ensuring airway protection, as aspiration risk is significant, according to medical consensus 2

Avoid supplemental oxygen unless SpO2 falls below 85%, and reduce or stop oxygen if saturation rises above 88%, based on the recommendations of medical experts 1, 4
Target oxygen saturation of 85-88% because paraquat toxicity is dramatically worsened by high oxygen concentrations through increased free radical production, as evidenced by medical research 1, 4
Oxygen accelerates paraquat-induced lung injury, thus requiring cautious management, as noted in medical guidelines 1

Contact poison control centers immediately for expert guidance, as advised by medical professionals 4

Do not delay airway protection to perform gastrointestinal decontamination, as emphasized by medical experts 2
Do not provide supplemental oxygen liberally, as this is uniquely harmful in paraquat toxicity, according to medical consensus 1, 4
Do not use gastric lavage routinely when activated charcoal is the evidence-based alternative, as recommended by medical guidelines 1, 2

The American Academy of Pediatrics recommends thorough washing of all exposed skin areas with soap and water to prevent secondary exposure from contaminated skin, clothing, or body fluids in pediatric patients with paraquat poisoning 5
The American Academy of Pediatrics suggests contacting poison control centers immediately for expert guidance and maintaining continuous contact for evolving recommendations in pediatric patients with paraquat poisoning 6

The American Academy of Pediatrics recommends using warmed shower water at lower pressure to prevent hypothermia and additional skin damage, and using heat lamps and blankets to prevent hypothermia during decontamination in pediatric patients with paraquat poisoning 5

Contact the national poison control center (e.g., 1‑800‑222‑1222 in the United States) as soon as paraquat exposure is identified to obtain expert management recommendations for the patient and care team. 7

Do not administer any oral agents (including decontamination solutions or antidotes) unless specifically directed by poison control specialists, to avoid worsening toxicity or interfering with recommended treatment protocols. 7