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Updated January 31, 2009

Definition: Wheezing is defined as a high-pitched, whistling sound made during difficult breathing and is caused by a narrowing or blockage of the airways. Wheezing is commonly associated with asthma or COPD.

Wheezes can be heard with, or without, a stethoscope during both inhalation or exhalation. Relief of wheezing is commonly achieved through the use of a bronchodilator.

Also Known As: sibilant wheezes
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