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Stridor

Definition

Stridor is an abnormal, high-pitched, musical breathing sound caused by a blockage in the throat or voice box (larynx). It is usually heard when taking in a breath.

See also: Wheezing

Alternative Names

Breathing sounds - abnormal; Extrathoracic airway obstruction

Considerations

Children are at higher risk of airway blockage because they have narrower airways than adults. In young children, stridor is a sign of airway blockage and must be treated right away to prevent total airway obstruction.

The airway can be blocked by an object, swelling of the tissues of the throat or upper airway, or spasm of the airway muscles or the vocal cords.

Common Causes

Common causes of stridor include:

Home Care

Follow your doctor's advice to treat the cause of the problem.

See also: Choking

Call your health care provider if

Stridor may be a sign of an emergency. Call your health care provider right away if there is unexplained stridor, especially in a child.

What to expect at your health care provider's office

In an emergency, the health care provider will check the person's temperature, pulse, breathing rate, blood pressure, and may need to do the Heimlich maneuver.

A breathing tube may be needed if the person can't breathe properly.

After the person is stable, the health care worker may ask questions about the patient's medical history, and perform a physical exam. This includes listening to the lungs.

Parents or caregivers may be asked the following medical history questions:

  • Is the abnormal breathing a high-pitched sound?
  • Did the breathing problem start suddenly?
  • Could the child have put something in the mouth?
  • Has the child been ill recently?
  • Is the child's neck or face swollen?
  • Has the child been coughing or complaining of a sore throat?
  • What other symptoms does the child have? (For example, nasal flaring or bluish color to the skin, lips, or nails)
  • Is the child using chest muscles to breathe (intercostal retractions)?

Tests that may be done include:

References

Sobol SE, Zapata S. Epiglottitis and croup. Otolaryngol Clin North Am. 2008;41(3);551-566.

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    Review Date: 4/26/2010

    Review By: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. 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- 2010 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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