A nurse in a health care provider’s office is reviewing lab results and notes a phenytoin level was drawn.

Which level would the nurse consider as therapeutic documentation?

9 mcg/mL

4 mcg/mL

24 mcg/mL

17 mcg/mL

Answer and Explanation

The Correct Answer is D

According to web search results, the total phenytoin reference range for children and adults is **10-20 µg/mL**¹. This means that a level of 17 mcg/mL falls within the therapeutic range.
Option A is within the therapeutic range but is on the lower end.
Option B is below the therapeutic range.
Option C is above the therapeutic range and could be considered toxic.

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Correct Answer is A

Explanation

Teratogenic refers to an agent or factor that causes malformation of an embryo ¹. It is something that can interfere with normal fetal development and cause congenital disabilities ³. Drugs, alcohol, chemicals, and toxic substances are examples of teratogens ³.
Option B is not correct because teratogenic specifically refers to harm caused to a fetus, not kidney damage.
Option C is not correct because teratogenic does not refer to a medication acting in the opposite manner than expected.
Option D is not correct because teratogenic does not refer to a medication causing an additive eﬀect.

A. 50 mg B. 200 mg C. 100 mg D. 400 mg

Correct Answer is C

Explanation

A half-life is the time it takes for the concentration of a drug in the body to decrease by half. In this case, the medication has an 8-hour half-life, so after 8 hours, the concentration of the medication in the client's body would be reduced to 400mg (half of the initial dose of 800mg). After another 8 hours (16 hours total), the concentration would be reduced to 200mg. After another 8 hours (24 hours total), the concentration would be reduced to 100mg.

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A nurse in a health care provider’s office is reviewing lab results and notes a phenytoin level was drawn. Which level would the nurse consider as therapeutic documentation?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A medication is described as having teratogenic side effects. The nurse understands that teratogenic is defined as which of the following?

Correct Answer is A

Explanation

The nurse has given 800mg of a medication that has an 8-hour half-life. How much of the medication will remain in the client's body 24 hours after administration if no additional medication is given?

Correct Answer is C

Explanation

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A nurse in a health care provider’s office is reviewing lab results and notes a phenytoin level was drawn. Which level would the nurse consider as therapeutic documentation?

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A nurse in a health care provider’s office is reviewing lab results and notes a phenytoin level was drawn.

Which level would the nurse consider as therapeutic documentation?