1. What is Drop Factor (gtt/mL)?

The drop factor is the number of drops (gtt) in one milliliter (mL) of IV solution. It varies by administration set and is typically printed on the packaging (e.g., 10, 15, or 20 gtt/mL).

2. How Does the Calculator Work?

The calculator uses the drop factor formula:

Where:

• Volume — Total volume to be infused (mL)
• Drop Factor — Drops per milliliter (gtt/mL)
• Time — Total infusion time (minutes)

Explanation: The formula calculates how many drops per minute are needed to deliver the prescribed volume over the specified time period.

3. Importance of Drop Factor Calculation

Details: Accurate drop factor calculations ensure proper IV infusion rates, preventing under- or over-administration of medications and fluids.

4. Using the Calculator

Tips: Enter the total volume in mL, time in minutes, and the drop factor (gtt/mL) from your IV set. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are common drop factors?
A: Common drop factors are 10 gtt/mL (macroset), 15 gtt/mL, and 60 gtt/mL (microset).

Q2: How do I find the drop factor?
A: Check the packaging of your IV administration set - it's usually printed there.

Q3: What's the difference between gtt/min and mL/hr?
A: gtt/min is used for manual IV regulation, while mL/hr is used for infusion pumps.

Q4: How does drop size affect the calculation?
A: Larger drops (lower gtt/mL) deliver more fluid per drop than smaller drops (higher gtt/mL).

Q5: When would I need this calculation?
A: When setting manual IV drip rates or verifying infusion pump settings.