1. What is the Holliday-Segar Method?

The Holliday-Segar method calculates daily maintenance fluid requirements based on body weight. It's commonly used in pediatric and adult medicine to determine appropriate intravenous 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 method accounts for decreasing fluid requirements per kilogram as body weight increases, reflecting metabolic needs.

3. Importance of Fluid Calculation

Details: Accurate fluid calculation is crucial for maintaining proper hydration, electrolyte balance, and preventing both dehydration and fluid overload in patients.

4. Using the Calculator

Tips: Enter patient weight in kilograms. The weight must be a positive value. The calculator will automatically apply the appropriate formula based on the weight range.

5. Frequently Asked Questions (FAQ)

Q1: When is the Holliday-Segar method used?
A: It's primarily used for calculating maintenance fluid requirements in hospitalized patients who are NPO (nothing by mouth).

Q2: Are there any adjustments needed for specific conditions?
A: Yes, fluid requirements may need adjustment in patients with heart failure, renal failure, SIADH, or other conditions affecting fluid balance.

Q3: How often should fluid calculations be reassessed?
A: Fluid requirements should be reassessed daily or whenever there are significant changes in patient weight or clinical status.

Q4: Does this replace clinical judgment?
A: No, this calculation provides a starting point. Clinical assessment and individual patient factors must always be considered.

Q5: What about electrolyte replacement?
A: Maintenance fluids typically include electrolytes (sodium and potassium) in addition to water, based on daily requirements.