jueves, 9 de abril de 2015

JAMA Network | JAMA | Heart Rate and Body Temperature Responses to Extreme Heat and Humidity With and Without Electric Fans

JAMA Network | JAMA | Heart Rate and Body Temperature Responses to Extreme Heat and Humidity With and Without Electric Fans



Research Letter | 

Heart Rate and Body Temperature Responses to Extreme Heat and Humidity With and Without Electric Fans

Nicholas M. Ravanelli, BSc1; Simon G. Hodder, PhD2; George Havenith, PhD2; Ollie Jay, PhD3
JAMA. 2015;313(7):724-725. doi:10.1001/jama.2015.153.
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Patz et al1 described the projected effects of more prolonged and severe heat waves on human health. A simple, low-cost cooling device is an electric fan. A Cochrane review2 concluded “no evidence currently exists supporting or refuting the use of electric fans during heat waves” for mortality and morbidity. However, public health guidance typically warns against fan use in hot weather. Recommended upper limits range from 32.3°C (90°F) at 35% relative humidity (RH) to the high 90s (96-99°F; 35.6-37.2°C, no RH stated2).

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