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The patient is ordered Glucerna 1.2 calories. You're supplied with a can of Glucerna that contains 237 mL. The doctor orders the tube feeding to be administered at a 1/2 strength with a rate of 65 mL/hr. How much water will you add to dilute the tube feeding formula as prescribed?

A.

237 mL

B.

68 mL

C.

474 mL

D.

118.5 ml

Answer and Explanation

The Correct Answer is A

Let’s break this down step by step:

 

Key information:

Formula available: Glucerna 1.2 calories, 237 mL can

Order: Tube feeding at ½ strength (means equal parts formula + water)

Rate: 65 mL/hr

 

Calculation:

To make ½ strength, you must dilute the formula with an equal volume of water.

Available formula = 237 mL

Therefore, water needed = 237 mL

Correct Answer: A. 237 mL


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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: 50 mL (DSW) + 10 mL (for reconstitution) = 60 mL
Infusion time: 45 minutes
Drop factor: 10 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 / 45 min
Infusion rate (mL/min) = 1.33 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) = 1.33 mL/min x 10 gtt/mL
Flow rate (gtt/min) = 13.3 gtt/min

Step 3: Round to the nearest whole number:
Flow rate (gtt/min) ≈ 13 gtt/min

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