If the IV rate is 100 mL/hr with a 15 gtt/mL drop factor, what is the gtt/min rate?

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Prepare for the PCC Field Medical Training Battalion – West Block 4 Test. Study with comprehensive multiple-choice questions, complete with insights and detailed explanations. Master the material and boost your confidence for your exam!

Multiple Choice

If the IV rate is 100 mL/hr with a 15 gtt/mL drop factor, what is the gtt/min rate?

Explanation:
Converting IV flow to drops per minute uses the drop factor and the hour-to-minute time conversion. The drop factor tells how many drops make up 1 mL, so to find drops per minute you multiply the volume per hour by the drop factor and then divide by 60 (minutes per hour): gtt/min = (mL/hr × gtt/mL) / 60. Here: 100 mL/hr × 15 gtt/mL = 1500 gtt/hr. Then 1500 gtt/hr ÷ 60 min/hr = 25 gtt/min. So the rate is 25 gtt/min.

Converting IV flow to drops per minute uses the drop factor and the hour-to-minute time conversion. The drop factor tells how many drops make up 1 mL, so to find drops per minute you multiply the volume per hour by the drop factor and then divide by 60 (minutes per hour): gtt/min = (mL/hr × gtt/mL) / 60.

Here: 100 mL/hr × 15 gtt/mL = 1500 gtt/hr. Then 1500 gtt/hr ÷ 60 min/hr = 25 gtt/min.

So the rate is 25 gtt/min.

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