Flow Rate Formula:
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Definition: This calculator determines the intravenous (IV) flow rate in mL/h based on the total volume to be infused and the time period.
Purpose: It helps medical professionals calculate the proper infusion rate for IV medications and fluids.
The calculator uses the formula:
Where:
Explanation: The total volume is divided by the infusion time to determine the hourly rate.
Details: Accurate flow rate calculation ensures proper medication administration, prevents fluid overload, and maintains therapeutic levels.
Tips: Enter the total volume in mL and the infusion time in hours. All values must be > 0.
Q1: What's the difference between flow rate and drip rate?
A: Flow rate is in mL/h while drip rate is in drops/min. Flow rate is more precise for pump-controlled infusions.
Q2: How do I calculate for minutes instead of hours?
A: Convert minutes to hours (divide by 60) or use the formula Q = (Vd × 60)/t where t is in minutes.
Q3: What's a typical flow rate range?
A: Common rates range from 20-125 mL/h for medications, but maintenance fluids may run at higher rates.
Q4: When would I need to adjust the flow rate?
A: Adjust based on patient condition, medication concentration, or specific protocol requirements.
Q5: Does this account for tubing factors?
A: No, this calculates the basic flow rate. For gravity drips, you would need to factor in the drip set (e.g., 10, 15, or 20 gtt/mL).