Questions: A physician orders penicillin potassium 375 mg tid × 10 days for a child with tonsillitis. What volume of medication should be administered per dose? Select one: a. 5 mL b. 15 mL c. 25 mL d. 1 mL

A physician orders penicillin potassium 375 mg tid × 10 days for a child with tonsillitis.

What volume of medication should be administered per dose?

Select one:
a. 5 mL
b. 15 mL
c. 25 mL
d. 1 mL

Transcript text: A physician orders penicillin potassium 375 mg tid × 10 days for a child with tonsillitis. What volume of medication should be administered per dose? Select one: a. 5 mL b. 15 mL c. 25 mL d. 1 mL

Solution

Solution Steps

Step 1: Find the concentration of the medication

The label states that there are 125 mg of penicillin V potassium per 5 mL of solution.

Step 2: Calculate the volume needed per dose

The prescribed dose is 375 mg. We set up a proportion:

125 mg / 5 mL = 375 mg / x mL

Cross-multiply:

125x = 1875

x = 1875 / 125

x = 15 mL

Final Answer: The final answer is $\boxed{b. 15 mL}$

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