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LEWISITE - PowerPoint PPT Presentation

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LEWISITE
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  1. L LEWISITE • Stored only at Deseret Chemical Depot in Tooele, UT • Causes immediate pain and redness upon skin or eye contact • unlike sulfur mustards CA167

  2. INHALATION EXPOSUREOF LEWISITE • Vapor causes immediate irritation of upper respiratory tract • May cause sneezing • In severe cases, abnormal accumulation of fluid in lungs and seepage of fluid between layers of membrane lining chest cavity • Mucous secretions are common and more likely CA168

  3. DIRECT CONTACT EXPOSUREWITH LEWISITE • Liquid Lewisite causes immediate severe pain upon contact with eyes and skin • Eyes can be severely damaged • immediate stinging pain • twitching of eye muscles • swelling of inner surface of eyelids and inflammation of iris may close eye within 1 hour • corneal damage may occur CA169

  4. DIRECT CONTACT EXPOSUREWITH LEWISITE • Eye swelling subsides within hours • Mild inflammation of eyelids may heal in few days without special treatment • Severe exposure may cause permanent injury or blindness CA170

  5. DIRECT CONTACT EXPOSUREWITH LEWISITE • Liquid Lewisite produces more severe skin lesions than sulfur mustard • Blistering over entire exposed area follows skin reddening • Deeper injury to connective tissue and muscles, greater blood vessel damage, more inflammation • Dead, gray skin will be noted within minutes after contact with liquid or vapor CA171

  6. DIRECT CONTACT EXPOSUREWITH LEWISITE • Pain is immediate • becomes deep and aching • itching and irritation persist for a day • blisters develop fully in 1/2 of time as sulfur mustard • Systemic poison to liver and kidneys • at large doses • Does not damage blood-producing tissues CA172

  7. INITIAL FIRST AID TREATMENTFOR LEWISITE EXPOSURE • Immediate decontaminate to avoid deep burns from liquid exposure • BAL ointment antidote for Lewisite no longer manufactured CA173