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Lung sounds

Terms in this set (5)

Wheezing
Continuous high-pitched squeaking or musical sound caused by rapid vibration of bronchial walls. First evident on expiration but possibly evident on inspiration as obstruction of airway increases.
Stridor
Continuous musical or crowing sound of constant pitch. Result of partial obstruction of larynx or trachea.
Crackles
Fine: series of short-duration, discontinuous, high-pitched sounds heard just before the end of inspiration. Similar sound to rolling hair between fingers.

Coarse: series of long-duration, discontinuous, low-pitched sounds caused by air passing through airway intermittently occluded by mucus, unstable bronchial wall. Similar to sound blowing through a straw under water.
Rales
Crackles; wet crackling noise in lungs
Rhonchi
Coarse, low-pitched breath sounds heard in patients with chronic mucus in the upper airways.
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