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The doctor orders Pepcid 10 mg by mouth three times a day. Instructions on the container say to reconstitute with water to make a concentration of 0.5 g/3 mL. How many ml/dose would you administer?

A.

1

B.

0.06

C.

16.7

D.

0.12

Answer and Explanation

The Correct Answer is B

The concentration provided is 0.5 g/3 mL.

Convert grams to milligrams:

0.5 g=500 mg

 

Now, the concentration is 500 mg/3 mL.

Find the concentration in mg/mL:

Concentration=(500 mg/3 mL)≈166.67 mg/mL

 

Next, to find the volume needed for a 10 mg dose, use the formula:

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

10 mg/166.67 mg/mL≈0.06 mL/dose


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Related Questions

Correct Answer is B

Explanation

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

Correct Answer is B

Explanation

Given:
Volume of fluid: 30 mL
Infusion time: 20 minutes

Step 1: Convert infusion time to hours:
Infusion time (hr) = 20 min / 60 min/hr
Infusion time (hr) = 0.33 hr

Step 2: Calculate the infusion rate in mL/hr:
Flow rate (mL/hr) = Volume (mL) / Infusion time (hr)
Flow rate (mL/hr) = 30 mL / 0.33 hr
Flow rate (mL/hr) = 90.90909091 mL/hr

Step 3: Round to the nearest whole number:
Flow rate (mL/hr) ≈ 90 mL/hr

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