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Order: Zosyn 1.3g in 100mL. D5W IVPB q8h to infuse over 30 min. Drop factor: 60 gtt/mL. Determine rate in gtt/min.

A.

75 gtt/min

B.

150 gtt/min

C.

100 gt/min

D.

200 gtt/min

Answer and Explanation

The Correct Answer is D

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


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Related Questions

Correct Answer is B

Explanation

The concentration provided is 0.5 g/3 mL.

Convert grams to milligrams:

0.5g=500mg

Now, the concentration is 500 mg/3 mL.

Find the concentration in mg/mL:

Concentration=(500mg/3mL)≈166.67mg/mL

Next, to find the volume needed for a 10 mg dose, use the formula:

Volume=(Desireddose(mg)/Concentration(mg/mL)

10mg/166.67mg/mL≈0.06mL/dose

Correct Answer is C

Explanation

Given:
Volume of fluid: 1,500 mL
Infusion time: 12 hours
Drop factor: 10 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) = 1,500 mL / 12 hr
Flow rate (mL/hr) = 125 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) = (1,500 mL / 12 hr) x 10 gtt/mL / 60 min/hr
Flow rate (gtt/min) = 125 mL/hr x 10 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) = 125 mL/hr
Flow rate (gtt/min) ≈ 21 gtt/min

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