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Calculate the flow rate in gtt/min using the formula method. Administer 2.500 mL. D5 0.33% NS in 8 hr. The drop factor is 15 grt/mL

A.

78 gtt/min

B.

65 gtt/min

C.

70 grimin

D.

60 git/min

Answer and Explanation

The Correct Answer is A

Given:

Volume of fluid: 2500 mL

Infusion time: 8 hours

Drop factor: 15 gtt/mL

 

Formula:

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

 

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

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

Infusion rate (mL/hr) = 2500 mL / 8 hr

Infusion rate (mL/hr) = 312.5 mL/hr

 

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

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

Flow rate (gtt/min) = (312.5 mL/hr x 15 gtt/mL) / 60 min/hr

Flow rate (gtt/min) = 4687.5 gtt/hr / 60 min/hr

Flow rate (gtt/min) = 78.125 gtt/min

 

Step 3: Round to the nearest whole number:

Flow rate (gtt/min) ≈ 78 gtt/min


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Related Questions

Correct Answer is A

Explanation

Given:

Volume of fluid: 50 mL (DSW) + 10 mL (for reconstitution) = 60 mL

Infusion time: 40 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) = 60 mL / 40 min

Infusion rate (mL/min) = 1.5 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) = 1.5 mL/min x 15 gtt/mL

Flow rate (gtt/min) = 22.5 gtt/min

Step 3: Round to the nearest whole number:

Flow rate (gtt/min) ≈ 23 gtt/min

Correct Answer is C

Explanation

Given:

Desired dose of Vistaril: 15 mg

Concentration of Vistaril: 50 mg/mL

Step 1: Set up the proportion:

Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)

Step 2: Substitute the values:

15 mg / Volume = 50 mg/mL

Step 3: Solve for the unknown volume:

Volume = 15 mg / 50 mg/mL

Step 4: Calculate the volume:

Volume = 0.3 mL

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