Rate of Infusion Formula:
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The infusion rate is the speed at which an intravenous (IV) fluid is administered to a patient, typically measured in milliliters per hour (mL/hr). It's a critical parameter in IV therapy to ensure proper medication delivery and fluid balance.
The calculator uses the basic infusion rate formula:
Where:
Explanation: The formula calculates how many milliliters should be delivered each hour to complete the infusion in the specified time.
Details: Accurate infusion rate calculation is essential for patient safety, ensuring medications are delivered at the correct dosage and preventing fluid overload or underhydration.
Tips: Enter the total volume in milliliters and the desired infusion time in hours. Both values must be positive numbers.
Q1: How do I calculate infusion rate for minutes instead of hours?
A: First convert minutes to hours (divide by 60), then use the same formula. For example, 30 minutes = 0.5 hours.
Q2: What are typical infusion rates?
A: Rates vary by patient condition and medication, but common ranges are 50-200 mL/hr for maintenance fluids, with specific medications having their own requirements.
Q3: How does this relate to drip rate (drops per minute)?
A: Drip rate can be calculated from infusion rate using the drop factor (drops/mL) of the IV set: Drops/min = (mL/hr × drop factor) ÷ 60.
Q4: When would I need to adjust infusion rates?
A: Rates may need adjustment based on patient response, fluid status, medication requirements, or changes in clinical condition.
Q5: Are there limitations to this calculation?
A: This is a basic calculation and doesn't account for complex infusion protocols, variable rate infusions, or patient-specific factors that may require rate adjustments.