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Calculate the rate in gtt/min for the following medications being administered IVPB.

Order: Doxycycline 25 mg IVPB D5W 50 mL over 1 hr. Drop factor: 15 gtt/mL

A.

6 gtt/min

B.

20 gtt/min

C.

25 gtt/min

D.

13 gtt/min

Answer and Explanation

The Correct Answer is D

Given:

Volume of fluid: 50 mL

Infusion time: 1 hour (60 minutes)

Drop factor: 15 gtt/mL

 

Formula:

Flow rate (gtt/min) = (Volume (mL) / Time (min)) x Drop factor (gtt/mL)

 

Step 1: Calculate the infusion rate in mL/min:

Infusion rate (mL/min) = Volume (mL) / Time (min)

Infusion rate (mL/min) = 50 mL / 60 min

Infusion rate (mL/min) = 0.83 mL/min

 

Step 2: Calculate the flow rate in gtt/min:

Flow rate (gtt/min) = Infusion rate (mL/min) x Drop factor (gtt/mL)

Flow rate (gtt/min) = 0.83 mL/min x 15 gtt/mL

Flow rate (gtt/min) = 12.5 gtt/min

 

Step 3: Round to the nearest whole number:

Flow rate (gtt/min) ≈ 13 gtt/min


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Related Questions

Correct Answer is D

Explanation

Given:

Volume of fluid: 100 mL

Infusion time: 30 minutes

Drop factor: 60 gtt/mL

Formula:

Flow rate (gtt/min) = (Volume (mL) / Time (min)) x Drop factor (gtt/mL)

Step 1: Calculate the infusion rate in mL/min:

Infusion rate (mL/min) = Volume (mL) / Time (min)

Infusion rate (mL/min) = 100 mL / 30 min

Infusion rate (mL/min) = 3.33 mL/min

Step 2: Calculate the flow rate in gtt/min:

Flow rate (gtt/min) = Infusion rate (mL/min) x Drop factor (gtt/mL)

Flow rate (gtt/min) = 3.33 mL/min x 60 gtt/mL

Flow rate (gtt/min) = 200 gtt/min

Correct Answer is D

Explanation

Given:

Volume of fluid: 500 mL

Infusion time: 6 hours

Drop factor: 15 gtt/mL

Formula for mL/hr:

Flow rate (mL/hr) = Volume (mL) / Time (hr)

Step 1: Calculate the flow rate in mL/hr:

Flow rate (mL/hr) = 500 mL / 6 hr

Flow rate (mL/hr) = 83.33 mL/hr

Formula for gtt/min:

Flow rate (gtt/min) = (Volume (mL) / Time (hr)) x Drop factor (gtt/mL) / 60 min/hr

Step 2: Calculate the flow rate in gtt/min:

Flow rate (gtt/min) = (500 mL / 6 hr) x 15 gtt/mL / 60 min/hr

Flow rate (gtt/min) = 83.33 mL/hr x 15 gtt/mL / 60 min/hr

Flow rate (gtt/min) = 1250 gtt/hr / 60 min/hr

Flow rate (gtt/min) = 20.83 gtt/min

Step 3: Round to the nearest whole number:

Flow rate (mL/hr) ≈ 83 mL/hr

Flow rate (gtt/min) ≈ 21 gtt/min

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