Practice Quiz

Vascular Access Exam Prep

Category - Vascular Access Practice Test

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A physician orders 1000 ml of normal saline solution to be infused over 12 hours. The drop factor is 15 drops per 1 ml. A nurse sets the flow rate at how many drops per minute?
  1. 21 drops
  2. 24 drops
  3. 30 drops
  4. 31 drops
Explanation
Answer: A - To obtain the number of drops per minute, use the IV flow rate formula:

Total volume x drop factor = drops per minute
Time in minutes

1000 ml x 15 gtts/ml = 15000 gtts = 20.8 = 21 drops per minute
12 hrs x 60 min/hr 720 min
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