wije appears to be beneficial from results of preliminary work (Nickson). Prece nisone injections have been reported to reduce posteirradiation inflammation (Matthewson). Further clinical experience with these agents is necessary before they: can be recommended for general use in the treatment of beta burns. ___.»8+1FACTORS INFLUENCING SEVERITY OF SKIN LESIONS PROM PALLOUT _.-8-1 PHYSICAL FACTORS. Usually fallout material must be in contact with the bare skin to result in significant skin damage. Most of the lesions in the Marshallese occurred on exposed parta of the body, and protection was afforded by clothing, even a single layer of cotton material, Since clothing would probably not result in more than about 25 per cent attenuation of the beta particles, additional protection must have been afforded by the fact that the loosely-fitted clothing tended to hold the radioactive material away from the skin. Avoidance of skin contamination by taking shelter offers al- most complete protection. No lesiong developed in those Marshallese who re- mained in their housea during the fallout. The ultimate dose to the akin depends on the radiation characteristics of the fallout material, the time after detonation that the fallout occurs, and the length of time that the material is in contact with the skin before céntamination {gs eccomplished. Due to the process of radioactive decay which is quite fast during the first few hours, the earlier the time of the fallout, the greater is the dose rate from a given sample. This fact empha- sizes the importance of early decontamination of the skin, particularly if contamination takes place during the first day after detonation. The fact that thorough decontamination of the Marshallese was not accomplished until their evacuation scme two days after the accident, resulted in an appreciable OE & increase of their skin dose. Those individuals that bathed or went swimming during the early pericd developed few lesions. |