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Calculate the flow rate in ml/hr and gtt/min using the formula method 500 mL D5W in 6hr. Drop factor: 15 gtt/mL.

84 mL/hr and 20 gtt/min

70mL/hr and 15 gtt/min

65 mL/hr and 10 gtt/min

83 mL/hr and 21 gtt/min

Answer and Explanation

The Correct Answer is D

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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Correct Answer is B

Explanation

Given:
Volume of fluid: 30 mL
Infusion time: 20 minutes

Step 1: Convert infusion time to hours:
Infusion time (hr) = 20 min / 60 min/hr
Infusion time (hr) = 0.33 hr

Step 2: Calculate the infusion rate in mL/hr:
Flow rate (mL/hr) = Volume (mL) / Infusion time (hr)
Flow rate (mL/hr) = 30 mL / 0.33 hr
Flow rate (mL/hr) = 90.90909091 mL/hr

Step 3: Round to the nearest whole number:
Flow rate (mL/hr) ≈ 90 mL/hr

A. 7 gtt/min B. 11 gtz/min C. 10 gtt/min D. 100 gtt/min

Correct Answer is B

Explanation

Given:

Volume of fluid: 500 mL

Infusion time: 8 hours

Drop factor: 10 gtt/mL

Medication volume: 10 mL (added to the fluid)

Step 1: Calculate the total volume to be infused:

Total volume = Volume of fluid + Volume of medication

Total volume = 500 mL + 10 mL

Total volume = 510 mL

Step 2: Calculate the infusion rate in mL/hr:

Infusion rate (mL/hr) = Total volume (mL) / Infusion time (hr)

Infusion rate (mL/hr) = 510 mL / 8 hr

Infusion rate (mL/hr) = 63.75 mL/hr

Step 3: Calculate the infusion rate in gtt/min:

Infusion rate (gtt/min) = Infusion rate (mL/hr) x Drop factor (gtt/mL) / 60 min/hr

Infusion rate (gtt/min) = 63.75 mL/hr x 10 gtt/mL / 60 min/hr

Infusion rate (gtt/min) = 10.625 gtt/min

Step 4: Round to the nearest whole number:

Infusion rate (gtt/min) ≈ 11 gtt/min

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Calculate the flow rate in ml/hr and gtt/min using the formula method 500 mL D5W in 6hr. Drop factor: 15 gtt/mL.

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Naxlex Comprehensive Predictor Exams

Calculate the flow rate in ml/hr. (Equipment used is programmable in whole mL/hr) 30 mL of antibiotic in 0.99% NS in 20 min by infusion pump.

Correct Answer is B

Explanation

Order: Levaquin 350 mg is added to 500 mL D5W to infuse over 8 hours. Drop factor: 10 gtt/mL. For IV reconstitute with 1o mL. of diluent to get 100 mg per 10 mL. (Consider the medication added in the volume of fluid.) Calculate the rate in gtt/min at which the IV should infuse

Correct Answer is B

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