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Sound wave transmission
Sound wave transmission


Acoustic trauma

Definition:

Acoustic trauma is injury to the hearing mechanisms in the inner ear. It is due to very loud noise.



Alternative Names:

Injury - inner ear; Trauma - inner ear; Ear injury



Causes:

Acoustic trauma is a common cause of sensory hearing loss . Damage to the hearing mechanisms within the inner ear may be caused by:

  • Explosion near the ear
  • Firing a gun near the ear 
  • Long-term exposure to loud noises (such as loud music or machinery)


Symptoms:
  • Partial hearing loss that most often involves exposure to high-pitched sounds. The hearing loss may slowly get worse.
  • Noises, ringing in the ear (tinnitus )


Exams and Tests:

The health care provider will most often suspect acoustic trauma if hearing loss occurs after noise exposure. Audiometry may determine how much hearing has been lost.



Treatment:

The hearing loss may not be treatable. The goal of treatment is to protect the ear from further damage. Eardrum repair may be needed.

A hearing aid may help you communicate. You can also learn coping skills, such as lip reading.



Outlook (Prognosis):

Hearing loss may be permanent in the affected ear. Wearing ear protection when around sources of loud sounds may prevent the hearing loss from getting worse.



Possible Complications:

Progressive hearing loss is the main complication of acoustic trauma.

Tinnitus (ear ringing) can also occur.



When to Contact a Medical Professional:

Call your health care provider if:

  • You have symptoms of acoustic trauma
  • Hearing loss occurs or gets worse


Prevention:
  • Wear protective ear plugs or earmuffs to prevent hearing damage from loud equipment.
  • Be aware of risks to your hearing from activities such as shooting guns, using chain saws, or driving motorcycles and snowmobiles.
  • Do not listen to loud music for long periods of time.


References:

Lonsbury-Martin BL, Martin GK. Noise-induced hearing loss. In: Cummings CW, Flint PW, Haughey BH, et al, eds. Otolaryngology: Head & Neck Surgery. 5th ed. Philadelphia, PA: Mosby Elsevier; 2010:chap 151.

O’Handley JG, Tobin EJ, Shah AR. Otorhinolaryngology. In: Rakel RE, ed. Textbook of Family Medicine. 8th ed. Philadelphia, PA: Saunders Elsevier; 2011:chap 19.




Review Date: 8/4/2014
Reviewed By: Ashutosh Kacker, MD, BS, Professor of Clinical Otolaryngology, Weill Cornell Medical College, and Attending Otolaryngologist, New York-Presbyterian Hospital, New York, NY. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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