[A case of accidental electrocution. Identification of metallization on the electric marks with an energy dispersive X-ray microanalyzer].
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A male infant aged one year and nine months was found dead on a bed after admission to hospital with suspected pneumonia. The patient apparently put an uncovered oval shaped lamp switch (pendant switch) into his mouth and died of electric shock after contacting the exposed wires of the switch (100 V, 60 Hz alternating current). There were extensive first- to fourth-degree burns on the inner surface of the both lips. Because the histological findings were consistent with electric burns and the burns showed vital reactions, electric shock was judged to be the cause of death. The pendant switch is normally a very convenient piece of bedside equipment for inpatients. However, when the patient is an infant who naturally puts all the objects into the mouth, such a switch should be placed out of reach, and it should be certain that the cap is not loose.
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Two trials using broiler chickens were undertaken to determine if variations in commercial slaughter techniques affected either the appearance or the residual blood content of the carcases produced. In the first trial groups of broilers were either stunned (55, 80 or 105 volts), electrocuted (240 volts) or anaesthetised and the subsequent bleed-out volumes after one, two, three and four minutes exsanguination were measured. The method of slaughter made no difference to the amount of blood lost after venesection. Haemoglobin content of the pectoral muscle was used to measure residual blood and was uniformly low in all groups (0.7 to 0.16 mg haemoglobin/g of muscle). In the second trial groups of chickens were either stunned and bled out, electrocuted, electrocuted and bled out, decapitated or halal killed before processing. The edible portions of the carcases were minced and the average haemoglobin content for each group was 0.19, 0.36, 0.22, 0.17 and 0.17 mg/g of soft tissue. The appearance of chickens that were stunned and bled out was the same as that of chickens that were electrocuted and bled out. The authors conclude that killing chickens by electrocution before exsanguination does not adversely affect the carcase appearance. Furthermore, electrocution ensures that broiler chickens are humanely slaughtered.
Over 2000 electrocution deaths were identified among U.S. construction workers from 1980 to 1991, with the highest mean annual crude mortality rate (2.5 per 100,000 people), and second highest mean age-adjusted rate (2.7 per 100,000 people) of all industries. Although the crude fatality rates showed a downward trend, construction workers are still about four times more likely to be electrocuted at work than are workers in all industries combined. Nearly 40% of the 5083 fatal electrocutions in all industries combined occurred in construction, and 80% were associated with industrial wiring, appliances, and transmission lines. Electrocutions ranked as the second leading cause of death among construction workers, accounting for an average of 15% of traumatic deaths in the industry from 1980 to 1991. The study indicates that the workers most at risk of electrical injury are male, young, nonwhite, and electricians, structural metal workers, and laborers. The most likely time of injury is 11 a.m. to 3 p.m. from June to August. Focusing prevention on these populations and characteristics through better methods of worker and supervisor electrical safety training, use of adequate protective clothing, and compliance with established procedures could minimize the average annual loss of 168 U.S. construction workers.