**Question:** Fluid intake by an 8 kg boy should be: March 2005

**Core Concept:** Fluid requirements in pediatric patients, particularly in infants, are determined based on their body weight and the type of fluid being consumed (e.g., oral fluids, intravenous fluids, etc.). The goal is to maintain appropriate fluid balance and prevent complications like dehydration or fluid overload.

**Why the Correct Answer is Right:**

For an 8 kg boy, the recommended fluid intake is determined by considering his body weight and type of fluid. In March 2005, the World Health Organization (WHO) guidelines recommend that for infants weighing between 5-10 kg, the fluid intake should be around 110-140 mL/kg/day for oral fluids.

**Why Each Wrong Option is Incorrect:**

A. 600 mL: This is too low, as it falls below the WHO guideline range for infants of 5-10 kg.
B. 1000 mL: This is also too low, as it does not meet the WHO guideline range for infants of 5-10 kg.
C. 1800 mL: This is too high, as it exceeds the WHO guideline range for infants of 5-10 kg.
D. 2000 mL: This is too high, as it exceeds the WHO guideline range for infants of 5-10 kg.

**Clinical Pearl:**

In infants, maintaining appropriate fluid balance is crucial for optimal growth and development. Fluid intake should be adjusted according to the child's weight and type of fluid consumed to prevent complications like dehydration or fluid overload. The WHO guidelines, such as the range of 110-140 mL/kg/day for infants weighing between 5-10 kg, can help ensure proper fluid management in pediatric patients.

**Correct Answer:**

The correct answer is D. 2000 mL, as it falls within the WHO guideline range for infants of 5-10 kg (110-140 mL/kg/day). In March 2005, the recommended fluid intake for an 8 kg boy would be approximately 2000 mL per day, which aligns with the WHO guidelines. This amount is based on the WHO recommendations for infants weighing between 5-10 kg, where maintaining an appropriate fluid balance is essential for optimal growth and development.