What is the preferred treatment for an otherwise healthy infant with acute dehydration?

• A. Prolonged intravenous fluids
• B. Clear liquids only
• C. Short course of oral rehydration therapy followed by age-appropriate diet
• D. Diluted formula

Answer: (C)

The key idea is that for a healthy infant with acute dehydration, the best approach is a brief course of oral rehydration therapy (ORT) followed by feeding with the usual age-appropriate diet. ORT restores fluid and electrolyte balance effectively while keeping the gut involved in absorption, lowers the need for intravenous fluids, and supports continued growth and nutrition. After rehydration, resuming normal feeding—breast milk or formula and age-appropriate solids as tolerated—helps recovery and prevents malnutrition.

Prolonged IV fluids are typically reserved for severe dehydration or when oral intake isn’t possible or safe. Relying on only clear liquids neglects electrolytes and calories, hindering restoration of hydration. Diluted formula can lead to inadequate electrolyte and nutrient intake and may worsen dehydration.