While auscultating a patient's lungs, a nurse hears an audible, high-pitched crowing sound. The nurse identifies this sound as

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The audible, high-pitched crowing sound heard during lung auscultation is known as stridor. Stridor is a sign of upper airway obstruction and can be heard during inspiration or expiration. Rhonchi are low-pitched wheezing sounds caused by air moving through narrowed airways. Wheezes are high-pitched whistling sounds caused by narrowed airways, and rales are crackling sounds caused by fluid accumulation in the lungs.

While Auscultating a Patient's Lungs, a Nurse Hears an Audible