For a child under 9 years experiencing dehydration, what is the recommended IV fluid volume?

The recommended intravenous fluid volume for a child under 9 years experiencing dehydration is typically based on weight and the severity of dehydration. For mild to moderate dehydration, administering 20 mL/kg of an isotonic crystalloid solution is commonly recommended. This bolus allows for adequate fluid resuscitation, as it compensates for fluid loss while ensuring that the child remains hemodynamically stable.

The choice of 20 mL/kg considers both the typical volume needed to restore proper hydration levels and the child's body weight, making it a practical approach for treating dehydration in pediatric patients. This option is consistent with guidelines used in clinical settings to manage pediatric hydration, particularly during emergencies.

Other options do not provide enough fluid volume for effective resuscitation, which is critical in managing dehydration risks in children. A volume such as 5 mL/kg would be too low and unlikely to address the dehydration effectively, while values like 10 mL/kg, though higher, may still not be sufficient depending on the dehydration severity.