Tag Archive: noise levels

OSHA announces hearing-protection technology contest winners

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Four inventors have been recognized by the Occupational Safety and Health Administration, the National Institute for Occupational Safety and Health, and the Mine Safety and Health Administration for their innovations in developing technology intended to combat work-related hearing loss.  The winning designs include a custom-fitted earpiece that offered workers protection, wearable sensor technology that detects noise levels, and an interchangeable decorative piece that attaches to silicone earplugs.

Link via @jeaninebotta.

No surprise here:

Noise levels in nightclubs may induce hearing loss.  News Medical reports that a new study raises concerns about the noise level in nightclubs.  So, how loud are nightclubs on average?  The study shows that “the average continuous level of noise in some nightclubs is at least 91.2 dBA (A-weighted decibels).”  Should you be concerned?  Well, the study also shows that “[c]lub goers may suffer noise-induced hearing loss from just one night out on the town.”  In short, the answer is “yes.”  Click the link for more.

Mumbai government responds robustly to address

noise levels ‘above safe limit’ in most parts of Mumbai.

The Hindustan Times reports that most localities in Mumbai, India’s noisiest city, are noisier than the safe limit.  The information comes from a study by the Brihanmumbai Municipal Corporation which measured sound levels at 740 of 1,200 locations across Mumbai and found that “most of the locations recorded noise levels above permissible limits for residential areas and silence zones.”  The noise mapping project was commenced to satisfy a Bombay High Court order that made it mandatory “for all authorities to carry out noise mapping and take into account all aspects of noise pollution as a parameter of quality of life.”

Indian authorities are concerned about the health implications of noise, particularly the concern that “exposure to high noise levels causes hearing loss, high blood pressure and mental health problems.”  Notes Dr MV Jagade, consultant ENT surgeon and head of department at JJ Hospital and Grant Medical College, “[e]xposure to noise pollution above 80 decibels (dB) for eight hours a day for eight years will induce permanent deafness. Shorter exposure of higher decibel levels also damages the ear drums.”

The noise-mapping project will continue through the end of the year until all 1,200 locations are measured; the combined data will be analysed and interpreted in January 2017.

It looks like people are finally considering the effect of noise on hospital patients

Intensive care patients plagued by excessive noise, finds research.

As this article on a study by staff in a Belgian intensive care unit (ICU) highlights, the noise levels in ICUs far exceeds World Health Organization guidelines for hospitals.  While the article mentions “subjective feeling of noise pollution experienced by patients, nurses and doctors,” it fails to address more immediate problem with noisy ICUs, namely the interference with sleep and the effects of sleep deprivation on patients–patients who are in an ICU and clearly need rest to recover from a significant health event.  One hopes that recognition of the problem will result in better study and more remedies for this problem than the “practical solution” offered by an ICU doctor, i.e., providing “earplugs or other ear defender devices” to patients.