1. What is IV Flow Rate Calculation?

Definition: This calculator determines the infusion rate of intravenous (IV) fluids in milliliters per hour based on the total volume to be infused and the time period.

Purpose: It helps medical professionals and caregivers accurately administer IV fluids over a specified time period.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q_{ml} \) — Flow rate (milliliters per hour)
• \( V_d \) — Volume to be infused (milliliters)
• \( t \) — Infusion time (hours)

Explanation: The total volume of IV fluid is divided by the infusion time to determine the hourly rate.

3. Importance of Accurate IV Flow Rate

Details: Proper flow rate calculation ensures patients receive medications and fluids at the correct rate, preventing complications from too rapid or too slow administration.

4. Using the Calculator

Tips: Enter the total volume to be infused in milliliters and the infusion time in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I convert drops per minute to mL/hour?
A: Multiply drops per minute by 3 (for 20 drops/mL) or by 1.67 (for 60 drops/mL).

Q2: What if my infusion time is in minutes?
A: Convert minutes to hours by dividing by 60 before entering the value.

Q3: How does this relate to medication dosages?
A: For medications added to IV fluids, calculate the concentration first, then use the flow rate to determine dosage per hour.

Q4: What's a typical flow rate for maintenance IV fluids?
A: Common rates range from 50-150 mL/h for adults, but always follow specific medical orders.

Q5: How do I account for IV tubing's drop factor?
A: This calculator provides mL/h. To get drops/min, multiply mL/h by the drop factor (gtts/mL) and divide by 60.