Frostbite from oxygen

In case of frostbite from contact with liquid oxygen, place the frostbitten part in warm water, 100°F to 105°F (37.8°C to 40.6°C). If warm water is not available or is impractical to use, wrap the affected part gently in blankets. Let the circulation re-establish itself naturally. Encourage the victim to exercise the affected part while it is being warmed. Consult a physician [5]. 

In case of frostbite from contact with liquid oxygen, place the frostbitten part in... 

The exposed individual should be removed from the toxic environment and given 100% humidified supplemental oxygen with assisted ventilation as required. If hypoxia has been prolonged, the patient should be evaluated for neurologic sequelae and supportive treatment provided. Dermal exposure to liquid acetylene should be treated as indicated for frostbite injury. 

Gaseous butane acts as a simple asphyxiant, which means that it causes toxicity by displacing oxygen and preventing it from reaching important tissues and organs. In its liquid state, it causes frostbite due to rapid cooling on evaporation. 

Victims should be moved immediately from the toxic atmosphere and receive 100% humidified supplemental oxygen with assisted ventilation as required. Patients with severe or prolonged exposure should be carefully evaluated for neurologic sequelae and provided with supportive treatment. Seizures may be controlled by administration of diazepam. If seizures cannot be controlled with diazepam or recur, pheny-toin or phenobarbital should be administered. Rewarming has been indicated for frostbite. On ocular exposure, the eyes should be rinsed for at least 15 min. 

The main effects of dimethyl ether in humans have been related to its depressant activity on the central nervous system (CNS). Depression of the CNS has been reported at concentrations ranging from 6% to 10% in air. Again, the rapid uptake and clearance of the chemical limits the possibility of other systemic damage in man. However, inhalation of high concentrations of vapor may cause heart irregularities, unconsciousness, and death. Vapor reduces oxygen available for breathing as it is heavier than air. Direct contact with liquid dimethyl ether may produce frostbite. 

Carbon Monoxide Self-contained breathing apparatus safety glasses and safety shoes Type D or Type N canister mask. Remove from exposure give oxygen if available support respiration call a doctor. If burned by liquid, treat as frostbite. ... 

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