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Order: Diazepam 4 mg via nasogastric tube t.i.d.

Available: Diazepam oral solution 5 mg per 5 mL. How many milliliters should the client receive per dosage?

A.

0.8 ml

B.

4ml

C.

3ml

D.

12 ml

Answer and Explanation

The Correct Answer is B

Given:
Ordered dose of Diazepam: 4 mg
Concentration of Diazepam oral solution: 5 mg/5 mL

Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)

Step 2: Substitute the values:
4 mg / Volume = 5 mg/5 mL

Step 3: Solve for the unknown volume:
Volume = 4 mg / (5 mg/5 mL)
Volume = 4 mg x (5 mL/5 mg)
Volume = 4 mL


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Related Questions

Correct Answer is C

Explanation

Given:

Ordered dose of Heparin: 100,000 units

Concentration of Heparin: 25,000 units/10 mL

Step 1: Set up the proportion:

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

Step 2: Substitute the values:

100,000 units / Volume = 25,000 units/10 mL

Step 3: Solve for the unknown volume:

Volume = 100,000 units / (25,000 units/10 mL)

Volume = 100,000 units x (10 mL / 25,000 units)

Volume = 40 mL

Correct Answer is B

Explanation

Given:

Ordered dose of Vancomycin: 500 mg

Infusion rate: 5 mg/kg/hr

Patient weight: 98 lbs

Concentration of Vancomycin: 500 mg/100 mL

Step 1: Convert patient weight from pounds to kilograms:

1 pound (lb) = 0.453592 kilograms (kg)

Patient weight in kg = 98 lbs x 0.453592 kg/lb = 44.462256 kg

Step 2: Calculate the total dose of Vancomycin in mg/hr:

Total dose (mg/hr) = Ordered dose (mg/kg/hr) x Patient weight (kg)

Total dose (mg/hr) = 5 mg/kg/hr x 44.462256 kg

Total dose (mg/hr) = 222.31128 mg/hr

Step 3: Calculate the infusion rate in mL/hr:

Infusion rate (mL/hr) = Total dose (mg/hr) / Concentration (mg/mL)

Infusion rate (mL/hr) = 222.31128 mg/hr / (500 mg/100 mL)

Infusion rate (mL/hr) = 222.31128 mg/hr x (100 mL/500 mg)

Infusion rate (mL/hr) = 44.462256 mL/hr

Step 4: Round to the nearest tenth:

Infusion rate (mL/hr) ≈ 44.5 mL/hr

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