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Paraquat poisoning: a review.

J F Dasta

    American Journal of Hospital Pharmacy
    |November 1, 1978
    PubMed
    Summary

    Paraquat poisoning, often from ingestion, can cause severe organ damage and death. Prompt gastrointestinal decontamination and supportive care are crucial for survival and preventing systemic toxicity.

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    Area of Science:

    • Toxicology
    • Pharmacology
    • Environmental Health

    Background:

    • Paraquat is a widely used herbicide with significant human toxicity.
    • Exposure can occur through ingestion, inhalation, or dermal contact.
    • Understanding paraquat's effects and management is critical for public health.

    Purpose of the Study:

    • To review the pathophysiology, symptoms, and treatment of paraquat intoxication.
    • To discuss the pharmacology and pharmacokinetics of paraquat.
    • To highlight the importance of immediate and effective medical intervention.

    Main Methods:

    • Review of existing literature on paraquat toxicity.
    • Analysis of reported cases and clinical outcomes.
    • Synthesis of information on decontamination and supportive care strategies.

    Main Results:

    • Oral ingestion is the most common route leading to severe systemic toxicity.
    • Dose-dependent toxicity can result in multi-organ failure (hepatic, cardiac, renal) or death.
    • Even lower doses can cause respiratory distress and renal dysfunction.

    Conclusions:

    • Immediate gastrointestinal decontamination (gastric lavage, whole-gut irrigation) is essential.
    • Adsorbents like activated charcoal and supportive therapies (diuresis, dialysis, hemoperfusion) improve outcomes.
    • Prompt and comprehensive treatment is vital to prevent mortality and severe morbidity from paraquat poisoning.

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