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CEN Practice Exam (Certified Emergency Nurse)

Category - Patient Care

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You receive an order for 1000 mL of normal saline over 12 hours. The drop factor is 15 drops per 1 mL. You prepare to set the flow rate at how many drops per minute?

15 drops a minute
17 drops a minute
21 drops a minute
23 drops a minute

Explanation

Answer: C - The drop rate is 21 drops a minute.
(Total volume ÷ Time in minutes) × Drop factor = Drops per minute

(1000 mL ÷ 720 minutes) × 15 gtts = 1.4 mL/min × 15 gtts = 21 drops a minute

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