Document pByr8MJ9bw3M78aDOV7NLmJ2d

Industrial Hygiene Digest Fsbmary, 1956 20Q Ths H*urd of Load Poisoning la Drawing tad Lead Patenting Operations. L_ Parmeggiaai udN. Jiaxlo. Uo<L lavoro 4h_, 176-1& (Ear. l454). ttaliUL A lead hazard occur* la cold drawing aad load patenting (temporise wtre ta molten lead). The main source of contamination wj found to be the lead daat formed oa the aurfac e of the wire Immediately after lead coating. The same hazard la produced by dye-dressing of rubber tubes with lead coating aad by all operations Involving the cold working of lead la which dust particles from surface cracks are profusely dispersed. Lead poisoning occurred la a number of workers la wire drawiag plants. Six cases of lead colic, five esses of aaemia, aad oae case of wrist-drop are described. The Importance of the haxard of lead poisoning from these operations la emphasized. -- Cond. from English summary (Boll. Hyg.) 201 The Prevention of Lead Poisoning. A Study of the Importance of Contact. J. Lacocq sad J; deLay. Arch, maladies profess. 16, 376-360 (1955). French. A study was made in a large factory where alloys containing 0.7S to 95% of lead were manipulated. Much dust tell ou the door and on the hands aad clothing of workers. The workers took no precautions against lead poisoning. Notwithstanding plentiful opportunity for lead as such to gain access to the body, very few indications of lead absorption appeared. The absence of load poisoning is attributed to the insolubility of metallic lead bound up with tho other metals ta the allays. -- Cond. from Boll. Hyg. 202 A Note on the Treatment of Lead Colic with Chlorpromarias (Largacttl). L. Pollet, M. Gaultier. J. Moreau. an6 J. Vaity. Arch, maladies profess. 16. 247-248 (1955). French. The authors had under their care in hospital eight cases of definite lead poisoning with sharp colle. Tho cases presented ail tho dasatcsl signs of load poisoning. The first five were treated In tho usual way with atropine, two injections dally of 0- 25 mgm. The colic continued without intermission (Cr two or three days, only sharing by tho fifth day. Then for two cases chlorpromaxiao was given as well as the atropine. The pain rapidly gave way, and the last patient was therefore given only tho chforpromaziae without any atropine. The. colic was just as quickly assuaged, the drug was administered intramuscularly in two in jections of 50 mgm. daily. -- Bull. Hyg. 203 Appearance, Evolution, and Treatment of Anemia in 103 Cases of Lead Poisoning Hospitalized at the Clinica del Lavoro from 1948 to Jane 1954. G. Saita and E. Arrigoni-Marteill. Mad. lavoro 46, 199-210 (Mar. 1955). Italian. Tho appearance aad evolution of anemia were studied in 103 cases ef lead poisoning. The average value of tho anemia in 60 cases ef load colic was: Kb 62, red cells 3,200,000. In 37 cases of chronic lead poisoning tho figures were: Hb 67, red cells 3,500,000. The drop la aaemia was never below 2 millions of rod cells. Stippled calls are always present in cases of colic. Retleulocytes aad stipples are more abundant in cases of colic than in cases of chronic load poisoning. Oa the average their increase Is proportional to foe severity ef the anemia, hut in individual cases foe stippled call vaiuea are widely scattered. Anemia occurred la as early as a faw months in several cases, aad la one case a few days after exposure. Anemia improved in stoat of the caaoa during hospitalization of four to six weeks, but only 16% reached, normal values. Another 18% remained atattonary, aad a alight decrease was sometimes noted.* Stippled cells decreased with the improvement of the anemia, bat rarely disappeared completely during hospitalization. Without further exposure, blood levels reached normal aftar an average of 16 mouths. Tho stippled cells disappeared after one to 14 mouths following the acute episode. Colic was treated with calcium, or BAL, or hormones (cortisone aad ACTK). Hormones had a favorable affect on colic, but were less efficient on zaamia. In the treatment of chronic poison ing, liver extracts had a better effect on the blood level than sodium citrate. . , -- Cond, from English summary (BuLL Hyg.) 11 206 1370