1. What is a Maintenance Fluid Rate Calculator?

Definition: This calculator determines the appropriate intravenous fluid administration rate based on patient weight and clinical factors.

Purpose: It helps medical professionals calculate maintenance fluid requirements for patients who cannot take fluids orally.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( R \) — Maintenance fluid rate (ml/hour)
• \( W \) — Patient weight (kilograms)
• \( F \) — Fluid factor (typically 4 ml/kg/h for adults)

Explanation: The patient's weight is multiplied by a standard fluid factor to determine the hourly fluid requirement.

3. Importance of Maintenance Fluid Calculation

Details: Proper fluid maintenance prevents dehydration while avoiding fluid overload, especially important in pediatric and critical care patients.

4. Using the Calculator

Tips: Enter the patient's weight in kilograms and select the appropriate fluid factor (default 4 ml/kg/h for adults). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What fluid factors should I use for different patients?
A: Typically 4 ml/kg/h for adults, 100 ml/kg/day for first 10 kg + 50 ml/kg/day for next 10 kg + 20 ml/kg/day for remaining weight in children.

Q2: When would I adjust the standard fluid factor?
A: Adjust for conditions like heart failure, renal impairment, burns, or other special circumstances.

Q3: Does this include replacement fluids for losses?
A: No, this calculates only maintenance needs. Additional fluids may be needed for ongoing losses.

Q4: How often should maintenance fluids be recalculated?
A: Reassess at least daily, or more frequently with significant weight changes or clinical status changes.

Q5: What solutions are typically used for maintenance?
A: Isotonic solutions like 0.9% saline or balanced crystalloids, often with potassium added for long-term maintenance.