What is the characteristic sound associated with stridor?

Stridor is characterized by a high-pitched harsh sound that occurs primarily during inspiration, and it is typically a result of obstruction or narrowing of the upper airway. This sound is often described as being similar to a seal barking or a crowing sound, indicative of the turbulent airflow passing through a narrowed passage. Conditions that can cause stridor include croup in children, foreign body obstruction, or swelling from anaphylaxis.

The distinct high pitch and harsh quality of stridor set it apart from other respiratory sounds, such as wheezing, which is usually softer and associated with bronchial obstruction. The low pitch grating sound mentioned in another choice is not typically associated with stridor, as that description could align more with other respiratory sounds like certain types of lung sounds not directly related to upper airway obstruction. Lastly, the deep rumbling noise does not accurately describe stridor’s characteristic sound, as such a noise might be more typical of other pulmonary conditions. Recognizing the specific sound of stridor is crucial for assessing airway compromise and guiding appropriate medical intervention.