1. What is IV Flow Rate Computation?

Definition: This calculator determines the infusion rate for intravenous (IV) therapy in either milliliters per hour (mL/h) or drops per minute (drops/min).

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

2. How Does the Calculator Work?

The calculator uses two formulas:

Where:

• \( Q_{ml} \) — Flow rate in milliliters per hour (mL/h)
• \( Q_d \) — Flow rate in drops per minute (drops/min)
• \( V_d \) — Volume to be infused (mL)
• \( t \) — Time for infusion (hours)
• \( D_f \) — Drop factor (drops/mL)

Explanation: The first formula calculates the simple mL/h rate, while the second converts this to drops/min using the drop factor and time conversion.

3. Importance of Accurate IV Flow Rate

Details: Proper IV flow rate calculation ensures patient safety, correct medication dosing, and prevents complications from too rapid or slow infusions.

4. Using the Calculator

Tips: Enter the total volume to infuse (mL), infusion time (hours), and drop factor (default 20 drops/mL). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a drop factor?
A: The drop factor is the number of drops per milliliter for the specific IV set being used (typically 10, 15, or 20 drops/mL).

Q2: Why calculate both mL/h and drops/min?
A: Some infusion pumps use mL/h, while manual IV drips are counted in drops/min.

Q3: How do I find the drop factor for my IV set?
A: It's usually printed on the IV tubing package or can be obtained from the manufacturer.

Q4: What if my infusion time is in minutes?
A: Convert minutes to hours by dividing by 60 before entering the value.

Q5: Does this account for medication concentration?
A: No, this calculates fluid administration rate only. Medication dosing requires additional calculations.