JOANNA MAE M. CAROLINO Upon Ingestion: BSN 4 If ingested, do not induce vomiting or drink fluids. Administer activated charcoal DISASTER NURSING PRELIM Definition: Action: and Management of the ff 1. Phosgene It is an organic chemical compound with the formula COCl₂. It is a colorless gas used as a major industrial chemical used to make plastics and pesticides. It is extremely toxic by acute (short-term) inhalation exposure. Severe respiratory effects, including pulmonary edema, pulmonary emphysema, and death have been reported in humans. Severe ocular irritation and dermal burns may result following eye or skin exposure. Management: Upon Exposure: If exposed, immediately remove from the source or place and remove clothing, rapidly wash the entire body with soap and water. If exposed, protect others from getting exposed to Phosgene by sealing the clothing in a plastic bag. Then seal the first plastic bag in a second plastic bag. Removing and sealing the clothing in this way will help protect you and other people from contamination that might be on the clothes. If eyes are exposed and causes burning or blurry vision, rinse the eyes with plain water for 10 to 15 minutes. If wearing contacts, remove them and place them in the bags with the contaminated clothing. Do not put the contacts back in the eyes. If wearing eyeglasses, wash them with soap and water. This can be put back on after washing them thoroughly. Upon Inhalation: Cover nose with damp cloth while moving away from the place and go to the highest ground possible, because phosgene is heavier than air and will sink to low-lying areas. Assess change in LOC and airway immediately and assess for respiratory distress Assess for s/sx of pulmonary emphysema and pulmonary congestion Administer O2 at 100% via venturi mask Administer bronchodilators for patients with evidenced of bronchospasm Administer corticosteroid to reduce inflammation Others: Administer antibiotics and antifungals as prophylaxis for risk of superinfection For liquid exposure where it causes frostbite: Remove from the source Soak affected area in warm water (temp: 37-39)10-30 mins and should maintain constant temperature NOTE: Do not rewarm if possibility of refreezing exist 9it worsens tissue damage) Provide analgesic (NSAID/OPIOD) Cover the affected area with bandage Antibiotic as prophylaxis (high risk for infection) Phosgene Precautions: Wear chemical splash goggles Impermeable gloves Lab gown Mask Containers of phosgene solutions should be stored in secondary containers 2. Lewiste Lewisite is a vesicant or a blistering-type military poison that is extremely toxic by all routes of exposure. Lewisite is a type of chemical warfare agent. · Lewisite is an oily, colorless liquid in its pure form and can appear amber to black in its impure form. Signs and Symptoms: NEUROLOGIC VITAL SIGNS ACUTE EXPOSURE o A) Hypotension, tachycardia, and hypothermia may develop. HEENT ACUTE EXPOSURE o A) Lacrimation, burns and/or strong irritation may occur after eye exposure. A geranium-like odor may be detectable on the victim. ACUTE EXPOSURE o A) "Lewisite shock" (refractory hypotension) may result due to increased capillary permeability and subsequent leakage following Lewisite exposures. RESPIRATORY ACUTE EXPOSURE o A) Severe respiratory irritation leading to acute lung injury ACUTE EXPOSURE o A) Restlessness and weakness may occur following systemic CHRONIC EXPOSURE o A) Toxic encephalopathy and peripheral neuropathy may also occur with chronic arsenic poisoning. Seizures have occurred in the children of one family. GASTROINTESTINAL CARDIOVASCULAR (ALI) or acute respiratory distress syndrome (ARDS) and chemical pneumonitis may occur following acute exposure to CHRONIC EXPOSURE o A) The incidence of chronic obstructive lung disease and bronchitis have been elevated in former poison gas employees. Recurrent pneumonia has been described in a family, but the relationship to arsenic exposure is not clear. ACUTE EXPOSURE o A) Nausea, vomiting and salivation may occur with exposure to Lewisite. o B) Gastroenteritis, sometimes with watery or bloody diarrhea, may occur after acute exposure to Lewisite. CHRONIC EXPOSURE o A) A sensation of dryness or burning in the mouth, and nausea and vomiting may occur with chronic exposure to arsenic. HEPATIC ACUTE EXPOSURE o A) Hepatic necrosis has been reported in exposed animals. IMMUNOLOGIC ACUTE EXPOSURE o A) Unlike mustard gas, Lewisite does NOT produce immunosuppression. CHRONIC EXPOSURE o A) Lewisite was allergenic in occupational exposures. GENITOURINARY ACUTE EXPOSURE o A) Acute toxic exposures may result in renal dysfunction. FLUID-ELECTROLYTE ACUTE EXPOSURE o A) Significant intravascular volume depletion may occur. o B) Electrolyte abnormalities may occur in conjunction with fluid losses. HEMATOLOGIC ACUTE EXPOSURE o A) Hemolytic anemia due to "Lewisite shock" with subsequent hemoconcentration has been reported in one case. Lewisite does NOT cause bone marrow damage. REPRODUCTIVE HAZARDS CARCINOGENICITY ACUTE EXPOSURE o A) Severe blistering and chemical burns have occurred following liquid and vapor exposure to Lewisite. CHRONIC EXPOSURE o A) Lewisite can cause contact dermatitis. Painful irritation or ulceration of the skin may occur. Basal cell and squamous cell cancers of the skin may also be seen years after exposure. HUMAN OVERVIEW o A) Lewisite is considered a suspect carcinogen because of its arsenic content. GENOTOXICITY DERMATOLOGIC A) At the time of this review, no human reproductive studies were found for Lewisite. A) Lewisite was inactive in the Ames Salmonella assay and proved inconclusive in D melanogaster for sexlinked lethal mutations assay. MANAGEMENT: Upon Exposure: If exposed, immediately remove from the source or place and remove clothing, rapidly wash the entire body with soap and water. If exposed, protect others from getting exposed to Phosgene by sealing the clothing in a plastic bag. Then seal the first plastic bag in a second plastic bag. Removing and sealing the clothing in this way will help protect you and other people from contamination that might be on the clothes. If eyes are exposed and causes burning or blurry vision, rinse the eyes with plain water for 10 to 15 minutes. If wearing contacts, remove them and place them in the bags with the contaminated clothing. Do not put the contacts back in the eyes. If wearing eyeglasses, wash them with soap and water. This can be put back on after washing them thoroughly. FOR LEWISTE SHOCK: Emergency management is needed Proper Cross-matching and blood transfusion Assess for any BT transfusion reaction 3. Tabun Upon Ingestion: If ingested, do not induce vomiting or drink fluids. Administer activated charcoal Upon Inhalation: Cover nose with damp cloth while moving away from the place and go to the highest ground possible, because phosgene is heavier than air and will sink to low-lying areas. Assess change in LOC and airway immediately and assess for respiratory distress Assess for s/sx of pulmonary emphysema and pulmonary congestion Administer O2 at 100% via venturi mask Administer bronchodilators for patients with evidenced of bronchospasm Administer corticosteroid to reduce inflammation Tabun is a man-made chemical warfare agent classified as a nerve agent. Nerve agents are the most toxic and rapidly acting of the known chemical warfare agents. They are similar to insecticides (insect killing chemicals) called organophosphates in the way they work and the harmful effects they cause. MANAGEMENT: Antidote: Administer 2 mg atropine sulfate every 30 minutes to treat tabun exposure 0.4.2 ORAL/PARENTERAL EXPOSURE FOR SEVERE BLISTERING AND CHEMICAL BURNS: A) Treatment should include recommendations listed in the INHALATION EXPOSURE section. INHALATION EXPOSURE Avoid touching and puncture the blister to prevent infection Wash the affected area with cool running water for 10-15 mins Provide proper wound hygiene Don’t use ointments as this can cause further burn Put topical analgesic to relieve pain A) MANAGEMENT OF MILD TO MODERATE TOXICITY o 1) Treatment is symptomatic and supportive, including treatment with atropine and oximes (eg, pralidoxime in the US and obidoxime and HI-6 internationally). o o o o o Monitor the patient for respiratory distress (from bronchospasm, increased bronchial secretion, or muscle weakness). Administer IV fluids and electrolytes as needed to replace fluid losses. Administer atropine for muscarinic manifestations (eg, salivation, diarrhea, bronchospasm, bronchorrhea, bradycardia) and pralidoxime for nicotinic manifestations (eg, weakness, fasciculations). If atropine is unavailable or if central anticholinergic toxicity is present, glycopyrrolate is a reasonable alternative. Supplemental therapy with oxygen and beta-2 adrenergic agonist aerosols (eg, albuterol) may be helpful. o o C) DECONTAMINATION o 1) UNIVERSAL PRECAUTIONS should be followed by all staff members caring for the patient; nitrile gloves are suggested. 2) PREHOSPITAL: o o o B) MANAGEMENT OF SEVERE TOXICITY o 1) Treatment is symptomatic and supportive, including treatment with atropine and oximes (eg, pralidoxime in the US and obidoxime and HI-6 internationally). o If induction of paralysis with muscle relaxing agents is required for intubation, succinylcholine should be avoided because of potential for prolonged duration of paralysis. In contrast, nondepolarizing neuromuscular blockers such as pancuronium may protect the neuromuscular junction from injury. o If seizure develops, administer a benzodiazepine IV. o Consider phenobarbital or propofol if seizures recur. Monitor for hypotension, dysrhythmias, respiratory depression, and need for endotracheal intubation. Evaluate for hypoglycemia, electrolyte disturbances, and hypoxia. o o Induction of emesis is not recommended. Move patient from the toxic environment to fresh air. Patients who may have passed through a droplet cloud should have external decontamination. Potentially contaminated clothing should be removed and the skin, face, and hair washed with soap and water or a dilute (less than 1%) sodium hypochlorite solution. Monitor for respiratory distress. HOSPITAL: ORAL EXPOSURE: Induction of emesis is not recommended. Administration of activated charcoal is not recommended due to the rapidity of absorption and the risk of charcoal aspirations. INHALATION EXPOSURE: After external decontamination (see above), carefully observe patients with inhalation exposure for the development of any systemic signs or symptoms and administer symptomatic treatment as necessary. water rinse. 0.5% Hypochlorite solution (prepared by adding one 6 ounce bottle of calcium hypochlorite granules to 5 gallons of water). EYE EXPOSURE: Remove contact lenses and irrigate exposed eyes with copious amounts of room temperature 0.9% saline or water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persists after 15 minutes of irrigation, an ophthalmologic examination should be performed. Do not instill sodium hypochlorite into the eye. Ocular symptoms caused by local absorption of nerve agents do not respond to systemic administration of atropine; symptomatic miosis may be relieved by local instillation of 2% homatropine or 1% atropine or 1% cyclopentolate hydrochloride or an eye mixture of 0.5% tropicamide and 0.5% phenylephrine hydrochloride, repeated several times daily for up to 3 days. Carefully observe patients with eye exposure for the development of systemic toxicity. DERMAL EXPOSURE: After external decontamination (see above), a physician may need to examine the area if irritation or pain persists. Discard contaminated clothing. Carefully observe patient for the development of systemic toxicity. Other alternatives are the following: M291 Skin Decontaminating Kit (for military and civil defense use manufactured by Rohm and Haas). Diluted hypochlorite (household bleach 1:10 in water) followed by a thorough D) AIRWAY MANAGEMENT o 1) Administer 100% humidified supplemental oxygen, perform endotracheal intubation and provide assisted ventilation as required. o Administer IV or IM atropine and inhaled beta-2 adrenergic agonists if bronchospasm develops. Give atropine to reduce hypersecretion and bronchial secretion. Avoid succinylcholine for rapid sequence intubation as prolonged paralysis may result. o BENZODIAZEPINES are indicated for agitation and seizures. F) ATROPINE SULFATE o 1) Titrate to resolution of bronchospasm, bronchorrhea, and severe bradycardia. Double dose as needed; no maximum dose. IV route is preferred if available. Autoinjectors may also be used. Primarily effective for muscarinic effects. It will not reverse nicotinic effects. DERMAL EXPOSURE OVERVIEW o 1) Dermal exposure may cause severe toxicity; treatment should include recommendations listed in the INHALATION EXPOSURE section. o 2) Remove contaminated clothing and jewelry. o o o Wash the skin, face, nails, and hair repeatedly and vigorously with soap and water. A physician may need to examine the area if irritation or pain persists. Discard contaminated clothing. Carefully observe patient for the development of systemic toxicity. Other alternatives are the following: a) M291 Skin Decontaminating Kit (for military and civil defense use manufactured by Rohm and Haas). b) Diluted hypochlorite (household bleach 1:10 in water) followed by a thorough water rinse. c) 0.5% Hypochlorite solution (prepared by adding one 6 ounce bottle of calcium hypochlorite granules to 5 gallons of water). hydrogen cyanide) and CK (for cyanogen chloride). MANAGEMENT: 4. Cyanide Cyanide is a rapidly acting, potentially deadly chemical that can exist in various forms. Cyanide can be a colorless gas, such as hydrogen cyanide (HCN) or cyanogen chloride (CNCl), or a crystal form such as sodium cyanide (NaCN) or potassium cyanide (KCN). Cyanide sometimes is described as having a “bitter almond” smell, but it does not always give off an odor, and not everyone can detect this odor. Cyanide is also known by the military designations AC (for Immediately leave from the source Move to an area with high and fresh air If exposed, remove clothing and put it sealed plastic bag and take a bath immediately with soap Avoid contamination of other materials For eyes exposure: rinse your eyes with plain water for 10 to 15 minutes. If you wear contacts, remove them and put them with the contaminated clothing. Do not put the contacts back in your eyes (even if they are not disposable contacts). If you wear eyeglasses, wash them with soap and water. You can put your eyeglasses back on after you wash them. If you are wearing jewelry that you can wash with soap and water, you can wash it and put it back on. If it cannot be washed, it should be put with the contaminated clothing. For Cyanide poisoning: Administer Hydroxocobalamin, sodium nitrite, and sodium thiosulfate given via intravenous (IV) infusion 5. Sulfur mustard Sulfur mustard is a type of chemical warfare agent. These kinds of agents cause blistering of the skin and mucous membranes on contact. They are called vesicants or blistering agents. Sulfur mustard is also known as “mustard gas or mustard agent,” or by the military designations H, HD, and HT. Sulfur mustard sometimes smells like garlic, onions, or mustard and sometimes has no odor. It can be a vapor (the gaseous form of a liquid), an oily-textured liquid, or a solid. Sulfur mustard can be clear to yellow or brown when it is in liquid or solid form. 6. Nitrogen mustard MANAGEMENT: No antidote available thus it is fatal, supportive care is needed Because no antidote exists for sulfur mustard exposure, the best thing to do is avoid it. Immediately leave the area where the sulfur mustard was released. Try to find higher ground, because sulfur mustard is heavier than air and will settle in low-lying areas. If avoiding sulfur mustard exposure is not possible, rapidly remove the sulfur mustard from the body. Getting the sulfur mustard off as soon as possible after exposure is the only effective way to prevent or decrease tissue damage to the body. Quickly remove any clothing that has liquid sulfur mustard on it. If possible, seal the clothing in a plastic bag, and then seal that bag inside a second plastic bag. Immediately wash any exposed part of the body (eyes, skin, etc.) thoroughly with plain, clean water. Eyes need to be flushed with water for 5 to 10 minutes. Do NOT cover eyes with bandages, but do protect them with dark glasses or goggles. If someone has ingested sulfur mustard, do NOT induce vomiting. Give the person some water or milk to drink, if they can swallow. Seek medical attention right away. One complication is immunosuppression, thus infection prevention is highly important Nitrogen mustards were produced in the 1920s and 1930s as potential chemical warfare weapons. They are vesicants (or blister agents) similar to the sulfur mustards. Nitrogen mustards come in different forms that can smell fishy, musty, soapy, or fruity. They can be in the form of an oily-textured liquid, a vapor (the gaseous form of a liquid), or a solid. Nitrogen mustards are liquids at normal room temperature (70ºF). Nitrogen mustards can be clear, pale amber, or yellow-colored when in liquid or solid form. The nitrogen mustards are also known by their military designations of HN-1, HN-2, and HN-3. Signs and Symptoms: o o o o o Skin: redness usually develops within several hours after exposure followed by blistering within 6 to 12 hours. Eyes: irritation, pain, swelling, and tearing may occur. High concentrations can cause burns and blindness. Respiratory tract: nose and sinus pain, cough, sore throat, and shortness of breath may occur within hours. Fluid in the lungs is uncommon. Digestive tract: abdominal pain, diarrhea, nausea, and vomiting. Brain: tremors, incoordination, and seizures are possible following a large exposure. MANAGEMENT No antidote available Do not induce vomiting and do not give any fluids Give activated Charcoal Because no antidote exists for sulfur mustard exposure, the best thing to do is avoid it. Immediately leave the area where the sulfur mustard was released. Try to find higher ground, because sulfur mustard is heavier than air and will settle in low-lying areas. If avoiding sulfur mustard exposure is not possible, rapidly remove the sulfur mustard from the body. Getting the sulfur mustard off as soon as possible after exposure is the only effective way to prevent or decrease tissue damage to the body. Quickly remove any clothing that has liquid sulfur mustard on it. If possible, seal the clothing in a plastic bag, and then seal that bag inside a second plastic bag. Immediately wash any exposed part of the body (eyes, skin, etc.) thoroughly with plain, clean water. Eyes need to be flushed with water for 5 to 10 minutes. Do NOT cover eyes with bandages, but do protect them with dark glasses or goggles. If respiration is compromised, administer high flow rate of O2 For burns, assess burn area, administer IVF and wound care 7. Sodium Nitrite Odorless, yellowish white, crystalline granule, rod or powder. It is used in heat transfer salts, metal treatment and fishing and preservatives MANAGEMENT: Eye Contact: For eyes exposure: rinse your eyes with plain water for 10 to 15 minutes. If you wear contacts, remove them and put them with the contaminated clothing. Do not put the contacts back in your eyes (even if they are not disposable contacts). If you wear eyeglasses, wash them with soap and water. You can put your eyeglasses back on after you wash them. If you are wearing jewelry that you can wash with soap and water, you can wash it and put it back on. If it cannot be washed, it should be put with the contaminated clothing. Skin contact: Remove contaminate clothing, wash with large amount of water and soap. Seal the clothing in a plastic bag, and then seal that bag inside a second plastic bag. Inhalation: Remove the person from exposure, begin rescue breathing Transfer immediately to the emergency department 8. Amyl nitrate Amyl nitrite is a depressant which means it slows down the messages travelling between the brain and body. Classified as an inhalant, it belongs to a class of drugs known as alkyl nitrites, which also includes butyl nitrite, isobutyl nitrite and isopropyl nitrite. MANAGEMENT: If ingested, do not induce vomiting Administer Activated charcoal 9. Sarin Sarin is a human-made chemical warfare agent classified as a nerve agent. Nerve agents are the most toxic and rapidly acting of the known chemical warfare agents. They are similar to certain kinds of insecticides (insect killers) called organophosphates in terms of how they work and what kind of harmful effects they cause. However, nerve agents are much more potent than organophosphate pesticides. Sarin is a clear, colorless, and tasteless liquid that has no odor in its pure form. However, sarin can evaporate into a vapor (gas) and spread into the environment. o o o o o o Confusion Drowsiness Weakness Headache Slow or fast heart rate Low or high blood pressure Even a small drop of sarin on the skin can cause sweating and muscle twitching where sarin touched the skin. Exposure to large doses of sarin by any route may result in the following harmful health effects: o Loss of consciousness o Convulsions o Paralysis o Respiratory failure possibly leading to death MANAGEMENT: Signs and Symptoms: o o o o o o o o o o o o Runny nose Watery eyes Small, pinpoint pupils Eye pain Blurred vision Drooling and excessive sweating Cough Chest tightness Rapid breathing Diarrhea Nausea, vomiting, and/or abdominal pain Increased urination Antidotes: Atropine and pralidoxime chloride (2-PAM Cl) Immediately remove from exposure Eye Contact: For eyes exposure: rinse your eyes with plain water for 10 to 15 minutes. If you wear contacts, remove them and put them with the contaminated clothing. Do not put the contacts back in your eyes (even if they are not disposable contacts). If you wear eyeglasses, wash them with soap and water. You can put your eyeglasses back on after you wash them. If you are wearing jewelry that you can wash with soap and water, you can wash it and put it back on. If it cannot be washed, it should be put with the contaminated clothing. Skin contact: Remove contaminate clothing, wash with large amount of water and soap. Seal the clothing in a plastic bag, and then seal that bag inside a second plastic bag. Inhalation: Remove the person from exposure, begin rescue breathing Transfer immediately to the emergency department If respiration is compromised, administer high flow rate of O2 For burns, assess burn area, administer IVF and wound care Assess muscle weakness and provide safety to prevent fall accidents 10. Bhopal MANAGEMENT: Immediately remove from exposure Eye Contact: For eyes exposure: rinse your eyes with plain water for 10 to 15 minutes. If you wear contacts, remove them and put them with the contaminated clothing. Do not put the contacts back in your eyes (even if they are not disposable contacts). If you wear eyeglasses, wash them with soap and water. You can put your eyeglasses back on after you wash them. If you are wearing jewelry that you can wash with soap and water, you can wash it and put it back on. If it cannot be washed, it should be put with the contaminated clothing. Skin contact: Remove contaminate clothing, wash with large amount of water and soap. Seal the clothing in a plastic bag, and then seal that bag inside a second plastic bag. Inhalation: Remove the person from exposure, begin rescue breathing Transfer immediately to the emergency department If respiration is compromised, administer high flow rate of O2 For burns, assess burn area, administer IVF and wound care