Calculator Inputs
Example Data Table
| Case | Method | Rate | Time | Bag | Prior | Total Infused | Remaining |
|---|---|---|---|---|---|---|---|
| Ward Example A | Pump | 80 mL/hr | 2 hr 30 min | 500 mL | 50 mL | 250 mL | 250 mL |
| Ward Example B | Pump | 125 mL/hr | 1 hr 45 min | 1000 mL | 0 mL | 218.75 mL | 781.25 mL |
| Ward Example C | Drip | 30 gtt/min at 20 gtt/mL | 3 hr | 1000 mL | 100 mL | 370 mL | 630 mL |
Formula Used
Pump Method
Session Infused = Rate in mL/hr × Time in hours
Drip Conversion
Equivalent mL/hr = (gtt/min × 60) ÷ Drop factor
Total Delivered
Total Infused = Prior infused volume + Session infused volume
Bag Review
Remaining Volume = Bag volume − Total infused volume
Delivery Percentage
Percent Infused = (Total infused ÷ Bag volume) × 100
Target Timing
Time to Target = Target volume ÷ Equivalent mL/hr
How to Use This Calculator
- Select whether you are using pump rate or manual drip rate.
- Enter duration in hours and minutes.
- Type the bag volume and any previously infused amount.
- Enter drop factor to convert between mL/hr and gtt/min.
- Add a target volume when you want timing and variance outputs.
- Press calculate to show infused volume, remaining bag fluid, and the Plotly graph.
FAQs
1. What does volume infused mean?
It is the estimated fluid amount delivered during the selected time. The calculator uses pump rate or drip rate with duration to estimate that delivered volume.
2. When should I use pump mode?
Use pump mode when the infusion device displays a programmed rate in mL per hour. This option is common for volumetric pumps and syringe pumps.
3. When should I use drip mode?
Use drip mode when you count drops manually. Enter the drip rate in gtt per minute and the tubing drop factor in gtt per milliliter.
4. Why is drop factor important?
Drop factor converts drops into milliliters. Without the correct tubing factor, manual drip estimates can be too high or too low.
5. What is prior infused volume?
It is any amount already delivered before the current observation period. Adding it gives a more complete estimate of total infused fluid from the bag.
6. Can this help with charting?
Yes. It can support infusion review, fluid balance checks, and documentation estimates. Always compare results with device readings and institutional workflow.
7. Why might total infused exceed bag volume?
That usually means one or more inputs need review. Common causes include wrong duration, wrong rate, incorrect bag size, or duplicated prior infused volume.
8. Is this calculator a treatment order?
No. It is an estimation tool for educational and operational support. Clinical decisions should follow orders, bedside assessment, and local protocols.