what is the therapeutic action of phenytoin
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Nursing Elites

ATI RN

ATI Pharmacology Proctored Exam 2024

1. What is the therapeutic action of Phenytoin?

Correct answer: B

Rationale: Phenytoin is primarily used as an anticonvulsant to prevent and control seizures. It works by stabilizing electrical activity in the brain, making it effective in managing conditions like epilepsy. Antidiabetic medications are used to regulate blood sugar levels, mood stabilizers help manage mood disorders, and antianxiety agents are used to reduce anxiety symptoms, none of which are the primary therapeutic action of Phenytoin.

2. A client is receiving warfarin therapy. Which of the following findings should the nurse identify as an adverse effect of warfarin?

Correct answer: B

Rationale: Epistaxis, or nosebleeds, can be an indication of excessive anticoagulation while on warfarin therapy. Warfarin is a blood thinner that helps prevent blood clots. Epistaxis can occur as a result of the blood-thinning effects of warfarin, leading to increased bleeding tendencies, including nosebleeds. Nausea, diarrhea, and dyspepsia are not typically associated with warfarin therapy; therefore, they are not the adverse effects the nurse should identify in a client receiving warfarin.

3. A client has a new prescription for combination oral NRTIs for the treatment of HIV. Which of the following statements should the nurse include in discharge teaching?

Correct answer: A

Rationale: The correct answer is A. NRTI antiretroviral medications inhibit the enzyme reverse transcriptase, which is essential for HIV replication. By blocking this enzyme, the medications prevent the virus from replicating and spreading. This mechanism of action helps to control the progression of HIV infection in the body. Choices B, C, and D are incorrect because NRTIs do not work by preventing protein synthesis, weakening the cell wall of the virus, or blocking HIV entry into cells. These mechanisms are associated with different classes of antiretroviral medications used in HIV treatment.

4. A client is receiving treatment with carboplatin. Which of the following findings should the nurse monitor?

Correct answer: B

Rationale: Corrected Rationale: Carboplatin is known to cause ototoxicity as a serious adverse effect. It is essential for the nurse to monitor the client for any signs or symptoms of hearing loss or other auditory issues to address them promptly. Incorrect Choices Rationale: A) Hyperglycemia is not a common side effect associated with carboplatin. C) Hypertension is not a typical finding to monitor for specifically related to carboplatin treatment. D) Bradycardia is not a primary concern when monitoring a client on carboplatin.

5. A client is taking oral Oxycodone and Ibuprofen in recommended doses. The nurse should identify that an interaction between these two medications will cause which of the following findings?

Correct answer: C

Rationale: When Oxycodone, a narcotic analgesic, and Ibuprofen, a nonsteroidal anti-inflammatory drug (NSAID), are taken together, they work synergistically to enhance the pain-relieving effects of both medications. These drugs act through different mechanisms, leading to a combined analgesic effect that is more effective than when used alone. Therefore, the interaction between Oxycodone and Ibuprofen results in an increase in the expected therapeutic effect of both medications.

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