Which of the following indicates a potential airway obstruction in children?

Stridor is a key indicator of potential airway obstruction in children. It is a high-pitched, wheezing sound resulting from turbulent airflow in the upper airway, often due to partial obstruction. Stridor typically occurs during inspiration, which distinguishes it from lower airway sounds, and it can suggest conditions such as croup, epiglottitis, or foreign body aspiration. In children, where airway anatomy is smaller and more prone to obstruction, recognizing stridor is critical for timely intervention.

In contrast, an audible wheeze indicates constriction of the bronchioles, often associated with lower airway issues like asthma or bronchitis, not an upper airway obstruction. Normal breathing patterns imply that there is no immediate distress or obstruction present, while clear lung sounds suggest unobstructed airflow within the lungs. Hence, stridor stands out as the significant sign of potential airway compromise.