Gtt Per Minute Formula:
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Gtt per minute (drops per minute) is a measurement used in intravenous therapy to calculate the flow rate of IV fluids. It helps healthcare providers administer the correct amount of fluid or medication over a specific time period.
The calculator uses the following formula:
Where:
Explanation: The formula calculates how many drops should fall into the drip chamber each minute to deliver the prescribed volume in the specified time.
Details: Accurate calculation of gtt per minute is crucial for patient safety. It ensures proper medication dosing, prevents fluid overload, and helps maintain therapeutic levels of IV medications.
Tips: Enter the total volume in mL, the drop factor (typically 10, 15, or 20 gtt/mL depending on your IV set), and the time in minutes. All values must be positive numbers.
Q1: What are common drop factors?
A: Common drop factors are 10 gtt/mL (macrodrip), 15 gtt/mL, and 60 gtt/mL (microdrip). Always check your specific IV set.
Q2: How do I convert hours to minutes?
A: Multiply hours by 60. For example, 2 hours = 120 minutes.
Q3: What's the difference between gtt/min and mL/hr?
A: Gtt/min is used when manually counting drops, while mL/hr is used with electronic infusion pumps.
Q4: How accurate is manual drip rate calculation?
A: Manual counting can vary by ±10%. For critical medications, always use an infusion pump when possible.
Q5: What if my calculation results in a fraction?
A: Round to the nearest whole number for practical administration, as you can't count partial drops.