Calculator Inputs
This tool is for educational and workflow support. Always follow institutional protocols, drug monographs, smart-pump libraries, and direct clinical oversight.
Example Data Table
Example only: norepinephrine 4 mg in 250 mL, 70 kg patient, step 0.02 mcg/kg/min every 5 minutes.
| Step | Time (min) | Dose (mcg/kg/min) | Rate (mL/hr) |
|---|---|---|---|
| 1 | 0 | 0.04 | 10.50 |
| 2 | 5 | 0.06 | 15.80 |
| 3 | 10 | 0.08 | 21.00 |
| 4 | 15 | 0.10 | 26.30 |
| 5 | 20 | 0.12 | 31.50 |
Formula Used
The calculator first converts the bag amount into the same dose numerator used by the selected dosing mode. It then divides by bag volume to find infusion concentration.
For mcg/kg/min dosing
For mcg/min dosing
For mg/hr or units/hr dosing
Cumulative titration volume
How to Use This Calculator
- Enter the drug name and choose the dose mode used in your protocol.
- Add patient weight when the dose is weight-based.
- Enter the total drug amount placed in the infusion bag and select its unit.
- Enter the full bag volume in milliliters.
- Provide the current dose, desired target dose, and dose step for each titration change.
- Set the titration interval, optional dose limits, maximum pump rate, and rounding increment.
- Press the calculate button to display the result above the form.
- Review the summary table, titration table, graph, and safety notes before using the numbers clinically.
- Use the CSV or PDF buttons to save the generated titration plan.
FAQs
1. What does this calculator estimate?
It estimates infusion concentration, current and target pump rates, titration steps, time to reach target, and bag volume consumed during the titration process.
2. When is patient weight required?
Weight is required when the dose is entered as mcg/kg/min. It is not needed for fixed-dose modes such as mcg/min, mg/hr, or units/hr.
3. Why does the target dose sometimes change automatically?
If you enter minimum or maximum dose limits, the calculator keeps the target within that range and adds a safety note explaining the adjustment.
4. What does pump-rate rounding do?
It rounds each calculated mL/hr result to the nearest practical increment, such as 0.1 or 0.5 mL/hr, to better match pump programming workflows.
5. Can I use this for insulin or heparin infusions?
Yes, fixed-dose unit-based infusions can be modeled by choosing units/hr and entering the bag amount in units. Always verify against local protocols.
6. What does cumulative volume mean?
It shows how much fluid is expected to be infused during the stepwise titration period before the target step is reached and maintained.
7. Why is there a maximum pump-rate field?
It helps flag scenarios where the calculated rate may exceed a practical or policy-based pump limit, prompting a concentration or workflow review.
8. Does this replace bedside judgment?
No. It supports calculations only. Drug choice, hemodynamic goals, monitoring, contraindications, and titration authority must come from qualified clinical teams.