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A physician ordered 1/4 strength Isomil 12 oz via nasogastric tube over 6 hours. How much solvent (water) will be needed?

A.

90 ml

B.

270 mL

C.

1440 mL

D.

360 mL

Answer and Explanation

The Correct Answer is B

Given:

Ordered volume of Isomil: 12 oz

Step 1: Determine the volume of Isomil needed for 1/4 strength:

Volume of Isomil for 1/4 strength = Original volume x (1/4)

Volume of Isomil for 1/4 strength = 12 oz x (1/4)

Volume of Isomil for 1/4 strength = 3 oz

 

Step 2: Calculate the volume of solvent (water) needed:

Solvent volume = Original volume - Volume of Isomil for 1/4 strength

Solvent volume = 12 oz - 3 oz

Solvent volume = 9 oz

 

Step 3: Convert ounces to milliliters:

1 oz = 29.5735 mL

Solvent volume (mL) = 9 oz x 29.5735 mL/oz

Solvent volume (mL) = 266.1615 mL

Step 4: Round to the nearest whole number:

Solvent volume (mL) ≈ 270 mL


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Related Questions

Correct Answer is B

Explanation

The order directly states that the infusion rate is 30 mL/hr.

The information about the amount of Lidocaine (2 g) and the volume of D5W (250 mL) is irrelevant to determining the flow rate in this case.

The flow rate is already specified as 30 mL/hr in the order.

Correct Answer is D

Explanation

Identify the desired dose and the available concentration:

Desired dose: 5 mg of hydrocodone

Available concentration: 7.5 mg of hydrocodone in 15 mL of elixir

Calculate the volume needed for the desired dose using the formula:

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

Determine the available concentration in mg/mL:

Availableconcentration=(7.5mg/15mL)=0.5mg/mL

Calculate the volume needed for a 5 mg dose:

Volume(mL)=(5mg/0.5mg/mL)=10mL

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