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Symmetrical chest expansion is indicative of normal respiratory function in pediatric clients. This finding demonstrates that both lungs are inflating equally during inhalation, which is essential for adequate ventilation and gas exchange. In children, a symmetrical rise and fall of the chest wall suggests that the underlying lung tissue is functioning properly and that there are no obstructions or significant issues affecting airflow.

In contrast, stridorous inhalation sounds can indicate upper airway obstruction, which is a concern that typically warrants further assessment and intervention. Wheezing heard on expiration suggests the presence of narrowed airways, potentially from conditions such as asthma, which is not considered a normal finding. A prolonged expiratory phase can also point to airway obstruction or restricted airflow, again indicating an abnormal respiratory status. Thus, symmetrical chest expansion stands out as a hallmark of normal respiratory assessment in pediatric populations.