1. What is the Holliday-Segar Formula?

The Holliday-Segar formula calculates daily maintenance fluid requirements for pediatric and adult patients based on body weight. It provides a standardized method for determining appropriate IV fluid administration.

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 metabolic needs.

3. Importance of Fluid Calculation

Details: Accurate fluid calculation is essential for maintaining proper hydration, electrolyte balance, and preventing complications from overhydration or dehydration, especially in hospitalized patients.

4. Using the Calculator

Tips: Enter patient weight in kilograms. The calculator will automatically apply the appropriate formula based on the weight category.

5. Frequently Asked Questions (FAQ)

Q1: When should the Holliday-Segar formula be used?
A: For calculating maintenance IV fluids in patients who are NPO or require fluid replacement therapy.

Q2: Are there any contraindications for this formula?
A: Yes, in patients with renal failure, heart failure, or other conditions requiring fluid restriction, the formula may need adjustment.

Q3: How does this differ from other fluid calculation methods?
A: The Holliday-Segar method is weight-based and provides different rates for different weight ranges, making it more precise than flat-rate calculations.

Q4: Should this formula be used for all age groups?
A: While primarily designed for pediatric patients, it can be applied to adults for maintenance fluid calculations.

Q5: What about electrolyte replacement?
A: This formula calculates water requirements only. Electrolyte replacement should be calculated separately based on individual needs.