Maintenance Fluids Formula:
From: | To: |
Definition: This calculator determines the appropriate hourly intravenous fluid rate for pediatric patients based on their weight.
Purpose: It helps medical professionals calculate maintenance fluid requirements for children to prevent dehydration while avoiding fluid overload.
The calculator uses the Holliday-Segar formula:
Where:
Explanation: This weight-based calculation accounts for higher metabolic needs in smaller children and proportionally decreases for larger children.
Details: Proper fluid maintenance prevents dehydration and electrolyte imbalances while avoiding complications of overhydration like pulmonary edema.
Tips: Enter the patient's weight in kilograms. The result shows the hourly fluid rate in mL/h.
Q1: Why different rates for different weight ranges?
A: Smaller children have higher metabolic rates and body water percentages, requiring proportionally more fluids per kg.
Q2: When should I adjust these rates?
A: Adjust for fever (add 12% per °C above 38°C), dehydration, renal/cardiac conditions, or other special circumstances.
Q3: What fluid type should I use?
A: Typically isotonic solutions like 0.9% NaCl with 5% dextrose, but consult hospital protocols.
Q4: How do I calculate daily fluid requirements?
A: Multiply the hourly rate by 24 to get the total daily volume.
Q5: Is this calculator suitable for neonates?
A: No, neonates require different calculations - use specific neonatal protocols.