Evolve HESI Practice Exam

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How many drops per minute should an IV of 5% dextrose and water be regulated to if infused over 8 hours with a drip set delivering 10 drops/ml?

  1. 15 drops/min

  2. 18 drops/min

  3. 21 drops/min

  4. 24 drops/min

The correct answer is: 21 drops/min

To calculate how many drops per minute are required for an IV infusion, the following formula can be used: Total volume to be infused (ml) / Total time of infusion (minutes) x drip factor (drops/ml) = drops per minute. Let's break down the question: 1. **Total Volume to Infuse**: For a solution of 5% dextrose and water, which typically comes in a standard volume for IV therapy, we assume it is a 1,000 ml bag (this is common unless specified otherwise). 2. **Total Time of Infusion**: The infusion is happening over 8 hours. We need to convert this into minutes: 8 hours x 60 minutes/hour = 480 minutes. 3. **Drip Factor**: The drip factor provided is 10 drops/ml. Now, we can substitute these values into the equation: 1,000 ml / 480 minutes = 2.0833 ml/min. Next, multiply this by the drip factor: 2.0833 ml/min x 10 drops/ml = 20.833 drops/min. Rounding this gives approximately 21 drops/min. Thus, the correct answer is 21 drops/min, which corresponds with the

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