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Occupational Hearing Loss
Alternate Names : Hearing Loss - Occupational
Definition
Hearing loss caused by damage to the inner ear from noise or vibration as a result of certain occupations or forms of entertainment.
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Overview, Causes, & Risk Factors
Occupational hearing loss is a form of acoustic trauma caused by exposure to vibration or sound. Sound is heard as the ear converts vibration from sound waves into impulses in the nerves of the ear.
Sounds above 90 decibels (dB, a measurement of the loudness or strength of vibration of a sound), particularly if the sound is prolonged, may cause such intense vibration that the inner ear is damaged.
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90 dB is about the loudness of a large truck about 5 yards away. Motorcycles, snowmobiles, and similar engines range around 85 to 90 dB.
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100 dB is reached by some rock concerts.
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120 dB is a jackhammer from 3 feet away.
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130 dB is a jet engine from 100 feet away.
A general rule of thumb is that if you need to shout to be heard, the sound is in the range that can damage hearing.
Some jobs, such as construction, airline ground maintenance, farming, and jobs involving loud music or machinery, carry high risk for hearing loss. In the U.S., the maximum job noise exposure is regulated by law. Both the length of exposure and the decibel level are considered. If the sound is at or greater than the maximum exposure, protective measures must be taken.
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• Definition
• Occupational Hearing Loss Overview, Causes, & Risk Factors
• Occupational Hearing Loss Symptoms & Signs
• Occupational Hearing Loss Prevention
• Occupational Hearing Loss Diagnosis & Tests
• Occupational Hearing Loss Treatment
• Occupational Hearing Loss Prognosis
• Occupational Hearing Loss Complications
• Calling Your Health Care Provider
• Pictures & Images
Topics that might be of interest to you Diseases & Conditions
• Acoustic Trauma
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• Hearing Loss
Review Date : 2/5/2003
Reviewed By : Edward Chang, MD, DDS, Facial Reconstructive Surgical and Medical Center, Palo Alto California. Review provided by VeriMed Healthcare Network.
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