Step 1: Convert inputs to common units.
Step 2: Solve equation.
Flow Rate = V / T
Flow Rate = 1000 / 8 = 125 mL/hr
Result = Pump Rate = 125 mL/hr
Calculates the pump rate to program on an electronic infusion device when the total volume and infusion duration are known.
Flow Rate (mL/hr) = Volume (mL) ÷ Time (hr)
Determines how long an infusion will take to complete when the volume and pump rate are known.
Time (hr) = Volume (mL) ÷ Flow Rate (mL/hr)
Calculates the total volume that will be delivered over a given time at a set pump rate.
Volume (mL) = Flow Rate (mL/hr) × Time (hr)
Select which variable to solve for, enter the two known values, and the calculator instantly computes the third. Electronic infusion pumps deliver fluid at a precise mL/hr rate — no drop factor is needed because the pump meters flow mechanically.
Order: Infuse 1,000 mL of Normal Saline over 8 hours using an infusion pump.
An infusion pump uses standard IV bags and tubing, delivering larger volumes at rates typically ranging from 1 to 999 mL/hr. A syringe pump holds a prefilled syringe and delivers very small, precise volumes, ideal for concentrated medications or neonatal care.
Electronic infusion pumps control flow rate mechanically, not by gravity. The drop factor of the IV tubing is irrelevant when using a pump because the pump precisely meters the fluid electronically. Drop factor only matters for manually regulated (gravity) IVs.
Common pump alarms include air-in-line, occlusion, and infusion complete. First, silence the alarm and assess the cause. Check the tubing for kinks, air bubbles, or a closed clamp. Verify the IV site for infiltration. Address the issue before restarting the pump, and document the alarm and intervention per your facility's policy.