What does stridor sound like during respiration?

Stridor is characterized by high-pitched, wheezing sounds that occur during respiration, particularly during inspiration. This sound is typically produced when there is an obstruction in the upper airway, such as swelling or constriction. It represents a turbulent airflow through narrowed air passages, which is why stridor is often described as sounding like a high-pitched whistle or crowing.

The other options describe sounds that are not typical of stridor. Softer whistling sounds might relate to other respiratory conditions, while harsh coughing sounds do not specifically align with the stridor's distinct characteristics. Normal breath sounds consist of clear air movement without any added turbulence or obstruction, which is quite different from the sound produced by stridor. Therefore, a high-pitched noise on inspiration or expiration is the defining feature of stridor, signaling potential respiratory distress or blockage.