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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 D

Explanation

1. Convert patient weight from pounds to kilograms:

Patient weight (kg) = 152 lb x 0.453592 kg/lb = 68.94 kg

2. Calculate the desired dose in mcg/min:

Desired dose (mcg/min) = 5 mcg/kg/min x 68.94 kg = 344.7 mcg/min

3. Convert mcg/min to mg/min:

Desired dose (mg/min) = 344.7 mcg/min / 1000 mcg/mg = 0.3447 mg/min

4. Calculate the concentration of dobutamine in the solution:

Concentration (mg/mL) = 500 mg / 250 mL = 2 mg/mL

5. Calculate the flow rate in mL/min:

Flow rate (mL/min) = Desired dose (mg/min) / Concentration (mg/mL)

Flow rate (mL/min) = 0.3447 mg/min / 2 mg/mL = 0.17235 mL/min

6. Calculate the flow rate in mL/hr:

Flow rate (mL/hr) = 0.17235 mL/min x 60 min/hr = 10.341 mL/hr

7. Round to the nearest tenth:

Flow rate (mL/hr) = 10.3 mL/hr

Therefore, the correct answer is 10.4 mL/hr

Correct Answer is C

Explanation

Let's calculate the dosage using the provided information.

Information from the label:

Bumetanide concentration: 0.25 mg/mL

Available volume: 10 mL vial

Order: Bumex (bumetanide) 1 mg IV daily

Calculation:

Determine the desired dose: 1 mg

Use the formula:

Desired dose (mg) / Available concentration (mg/mL) = Volume to administer (mL)

Substitute the values:

1 mg / 0.25 mg/mL = Volume to administer (mL)

Calculate:

Volume to administer = 4 mL

Therefore, the correct answer is C. 4 mL

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