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Nerves of the larynx
Nerves of the larynx


Laryngeal nerve damage
Laryngeal nerve damage


Definition:

Laryngeal nerve damage is injury to one or both of the nerves that are attached to the voice box.



Alternative Names:

Vocal cord paralysis



Causes, incidence, and risk factors:

Injury to the laryngeal nerves is uncommon.

However, it may occur from:

  • A complication of neck or chest surgery (especially thyroid, lung, or heart surgery)
  • A breathing tube in the windpipe (endotracheal tube)
  • Tumors in the neck or upper chest, such as thyroid or lung cancer


Symptoms:
  • Difficulty speaking
  • Difficulty swallowing
  • Hoarseness

Injury to the left and right laryngeal nerves at the same time is an urgent situation that can lead to difficulty breathing.



Signs and tests:

The doctor will see if the vocal cords move abnormally. Abnormal movement usually means that a laryngeal nerve is injured.

Tests may include:



Treatment:

Treatment depends on the cause of the injury. In some instances, no treatment may be needed and the nerve may recover on its own. Voice therapy is useful in some cases.

If surgery is needed, the goal is to change the position of the paralyzed vocal cord to improve the voice. This can be done with:

  • Arytenoid adduction
  • Injections of collagen, Gelfoam, or some other substance
  • Thyroplasty

If both left and right nerves are damaged, a hole may need to be cut into the windpipe (tracheotomy) immediately to allow breathing. This is followed by another surgery at a later date.



Support Groups:



Expectations (prognosis):

The outlook depends on the cause of the injury. In some cases, the nerve rapidly returns to normal. However, sometimes the damage is permanent.



Complications:



Calling your health care provider:

Call your health care provider if you have:

  • Difficulty breathing
  • Unexplained hoarseness that lasts for more than 3 weeks


Prevention:




Review Date: 10/10/2008
Reviewed By: Alan Lipkin, MD, Otolaryngologist, Private Practice, Denter, Colorado. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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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789 Central Avenue, Dover, NH 03820
Phone: (603) 742-5252
Toll free: 1 (877) 201-7100