Question

The healthcare provider prescribes an IV solution of ampicillin 1 gram in 50 mL of DşW at 25 drops/minute. The nurse uses an infusion set that delivers 15 gtt/mL and starts the infusion at 1900. Using the 24-hour clock, what time should the nurse anticipate the infusion to be completed? (Enter numeric value only.)

Answer 1

The infusion will be completed at 19:31

The medicine that the nurse is giving the patient is 1 gram of ampicillin diluted in 50 mL of dextrose water.

This means 50 mL + 1 mL = 51 mL. 1 gram of ampicillin = 1 mL considering all water-based substances have a density of 1gm/mL.

Now, the set delivers 15 ggt or drops per mililiter. Let's calculate the total drops in the 51 mL.

51mL x 15ggt =765 drops

Finally, we know the medicine is given at a rate of 25 drops per minute. Let's calculate the time:

• 765 drops / 25 drops per minute = 30.6 minutes

This means the medicine it will take 30.6 minutes for the infusion to be completed and therefore the infusion will be completed at 19:31 (19:00 + 30.6 minutes = 19:30.6 or 19:31).

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