Lung Sounds

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HESI 246 Health Assessment

Last updated 7:14 PM on 7/14/26
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5 Terms

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Wheezing

High-pitched, squeaking sound, best heard on expiration over all lung fields, unrelieved by coughing (asthma, COPD, emphysema)

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Crackles / Rales

Simulated by rolling hair bear ear between two fingers, best heard on inspiration in the lower bases, unrelieved by coughing (CHF, pneumonia)

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Rhonchi

Course, harsh, low-loud gurgling or rattling, best heard on expiration over bronchi and trachea, often relived by coughing (bronchitis, pneumonia)

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Stridor

Life threating!

Harsh, high-pitched, easily audible on inspiration, progressive narrowing of upper airway requiring immediate attention (partial airway obstruction, croup, epiglottis)

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Unilateral Absent or Diminished

Inability to hear equal, bilateral breath sounds (pneumothorax, tension pneumothorax, hemothorax, or Hx of pneumectomy)