An IV piggyback is 100 mL to be infused over 1 hour with a drop factor of 15 gtt/mL. What is the rate in gtt/min?

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Multiple Choice

An IV piggyback is 100 mL to be infused over 1 hour with a drop factor of 15 gtt/mL. What is the rate in gtt/min?

Explanation:
To get gtt per minute, multiply the volume by the drop factor and divide by the time in minutes: gtt/min = (mL × gtt/mL) / minutes. Here, (100 mL × 15 gtt/mL) / 60 min = 1500 / 60 = 25 gtt/min. Another way: the infusion is 100/60 ≈ 1.6667 mL per minute, and with 15 drops per mL, that’s 1.6667 × 15 ≈ 25 gtt/min. The rate is 25 gtt/min.

To get gtt per minute, multiply the volume by the drop factor and divide by the time in minutes: gtt/min = (mL × gtt/mL) / minutes. Here, (100 mL × 15 gtt/mL) / 60 min = 1500 / 60 = 25 gtt/min. Another way: the infusion is 100/60 ≈ 1.6667 mL per minute, and with 15 drops per mL, that’s 1.6667 × 15 ≈ 25 gtt/min. The rate is 25 gtt/min.

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