The most reliable method of determining mild dehydration in a child is which of the following?

The most reliable method of determining mild dehydration in a child is which of the following?

• A. Dryness of mucous membranes
• B. Skin turgor
• C. Urine output
• D. Fontanelles

Answer: (C)

Urine output is the most dependable clue to hydration status in a child because it directly reflects kidney perfusion and overall fluid balance. Dry mucous membranes or reduced skin turgor can be influenced by age, skin elasticity, and recent fluid intake, making them less reliable on their own. Fontanelle fullness in infants also varies with age and other factors and may not change consistently in mild dehydration. In early or mild dehydration, urine production typically decreases first, so tracking diaper wetness or actual urine volume over a period provides a more objective and reproducible measure of hydration.

Urine output is the most dependable clue to hydration status in a child because it directly reflects kidney perfusion and overall fluid balance. Dry mucous membranes or reduced skin turgor can be influenced by age, skin elasticity, and recent fluid intake, making them less reliable on their own. Fontanelle fullness in infants also varies with age and other factors and may not change consistently in mild dehydration. In early or mild dehydration, urine production typically decreases first, so tracking diaper wetness or actual urine volume over a period provides a more objective and reproducible measure of hydration.