1. What is Maintenance IVF Rate?

The Maintenance IVF (Intravenous Fluid) Rate is calculated using the Holliday-Segar method for pediatric patients. This formula provides the appropriate hourly fluid rate to maintain hydration and electrolyte balance based on body weight.

2. How Does the Calculator Work?

The calculator uses the Holliday-Segar formula:

Where:

• First 10 kg: 4 mL/kg/hour
• Next 10 kg (11-20 kg): 2 mL/kg/hour
• Remaining weight (>20 kg): 1 mL/kg/hour

Explanation: This method accounts for the decreasing metabolic rate and fluid requirements per kilogram as body weight increases.

3. Importance of IVF Rate Calculation

Details: Accurate maintenance fluid calculation is essential for preventing dehydration in pediatric patients while avoiding fluid overload, especially in patients with cardiac or renal conditions.

4. Using the Calculator

Tips: Enter the patient's 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: Why use the Holliday-Segar method?
A: It's the most widely accepted method for calculating maintenance fluids in pediatric patients and correlates well with metabolic requirements.

Q2: What fluids are typically used for maintenance?
A: D5 1/2NS + 20 mEq KCl/L is commonly used, but the specific fluid choice depends on the patient's electrolyte status and clinical condition.

Q3: When should maintenance fluids be adjusted?
A: Adjust for fever (add 12% per °C above 38°C), dehydration, ongoing losses, renal failure, heart failure, or SIADH.

Q4: Is this formula suitable for neonates?
A: No, this formula is for children beyond the neonatal period. Neonates have different fluid requirements.

Q5: What about patients with abnormal body composition?
A: For obese patients, consider using ideal body weight or adjusted body weight. For edematous patients, use dry weight.