1. What is the Holliday-Segar Formula?

The Holliday-Segar formula calculates daily maintenance intravenous (IV) fluid requirements for children based on body weight. It provides a standardized approach to ensure adequate hydration while preventing fluid overload.

2. How Does the Calculator Work?

The calculator uses the Holliday-Segar formula:

Where:

• First 10 kg: 100 mL/kg/day
• Next 10 kg (11-20 kg): 50 mL/kg/day
• Remaining weight (>20 kg): 20 mL/kg/day

Explanation: The formula accounts for decreasing fluid requirements per kilogram as body weight increases, reflecting the higher metabolic rate in smaller children.

3. Importance of IV Fluid Calculation

Details: Accurate fluid calculation is essential for maintaining electrolyte balance, preventing dehydration, and avoiding complications such as cerebral edema or heart failure in pediatric patients.

4. Using the Calculator

Tips: Enter the child's weight in kilograms. The weight must be a positive value. The calculator will compute the daily maintenance IV fluid requirement.

5. Frequently Asked Questions (FAQ)

Q1: Why use the Holliday-Segar formula?
A: It's a widely accepted method for calculating maintenance IV fluids in children, providing a balance between adequate hydration and safety.

Q2: Are there adjustments for specific conditions?
A: Yes, fluid requirements may need adjustment in conditions like fever, diarrhea, renal failure, or cardiac issues. Always consider clinical context.

Q3: How is the fluid administered?
A: The calculated daily amount is typically divided and administered evenly over 24 hours, often with added electrolytes.

Q4: What about neonates?
A: This formula is generally used for children beyond the neonatal period. Neonates have different fluid requirements.

Q5: When should this formula not be used?
A: Not appropriate for patients with severe electrolyte imbalances, renal impairment, or those requiring fluid restriction.