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Calculator For Maintenance Fluids

Maintenance Fluids Formula:

\[ \text{Fluids} = 4 \text{ mL/kg/h (first 10 kg)} + 2 \text{ mL/kg/h (next 10 kg)} + 1 \text{ mL/kg/h (remainder)} \]

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1. What is Pediatric Maintenance Fluids Calculator?

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.

2. How Does the Calculator Work?

The calculator uses the Holliday-Segar formula:

\[ \text{Fluids} = 4 \text{ mL/kg/h (first 10 kg)} + 2 \text{ mL/kg/h (next 10 kg)} + 1 \text{ mL/kg/h (remainder)} \]

Where:

Explanation: This weight-based calculation accounts for higher metabolic needs in smaller children and proportionally decreases for larger children.

3. Importance of Maintenance Fluids Calculation

Details: Proper fluid maintenance prevents dehydration and electrolyte imbalances while avoiding complications of overhydration like pulmonary edema.

4. Using the Calculator

Tips: Enter the patient's weight in kilograms. The result shows the hourly fluid rate in mL/h.

5. Frequently Asked Questions (FAQ)

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.

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