Holliday-Segar Formula:
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Definition: This calculator estimates the daily maintenance fluid requirements for pediatric patients based on the Holliday-Segar formula.
Purpose: It helps healthcare professionals determine appropriate fluid administration for children to maintain normal hydration.
The calculator uses the Holliday-Segar formula:
Where:
Explanation: The formula accounts for decreasing metabolic needs per kilogram as body weight increases.
Details: Proper fluid calculation prevents dehydration or fluid overload, especially important in pediatric patients who have different fluid requirements than adults.
Tips: Enter the patient's weight in kilograms. The weight must be > 0. The calculator will automatically apply the appropriate formula based on weight ranges.
Q1: Why does the formula change at different weight ranges?
A: Metabolic rate per kilogram decreases as body weight increases, so fluid requirements per kg decrease accordingly.
Q2: Is this formula suitable for neonates?
A: No, neonates have different fluid requirements. This formula is typically used for children >1 month old.
Q3: When would I adjust these maintenance values?
A: Adjustments may be needed for fever, dehydration, renal failure, or other special conditions.
Q4: What fluids are typically used for maintenance?
A: Isotonic solutions like 0.9% NaCl with 5% dextrose or similar balanced solutions are commonly used.
Q5: How should the daily amount be administered?
A: Typically divided evenly over 24 hours, but may be adjusted based on clinical needs.