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 healthcare professional is preparing to administer Belimumab for a client with Systemic Lupus Erythematosus. Which of the following actions should the healthcare professional plan to take?

Correct answer: D

Rationale: The correct action the healthcare professional should plan to take when administering Belimumab is to monitor the client for hypersensitivity reactions. Belimumab is known to cause severe infusion reactions, including anaphylaxis in some cases. Monitoring for hypersensitivity reactions is crucial to detect and manage any adverse reactions promptly. Options A, B, and C are incorrect because warming the medication, administering by slow IV infusion, and dilution are not specific actions needed for Belimumab administration. The priority is to monitor the client for potential hypersensitivity reactions to ensure their safety.

3. A client has a new prescription for Metoprolol to treat hypertension. Which of the following instructions should the nurse include?

Correct answer: C

Rationale: The correct instruction for a client starting Metoprolol is to avoid sudden changes in position. Metoprolol can cause orthostatic hypotension, leading to dizziness and falls if the client changes positions quickly. By advising the client to make position changes slowly, the nurse helps prevent these adverse effects and promotes safety.

4. When a client has a new prescription for Dextromethorphan to suppress a cough, what adverse effect should they monitor for according to the nurse's instruction?

Correct answer: C

Rationale: The correct answer is C: Sedation. Dextromethorphan can lead to sedation as an adverse effect. The nurse should advise the client to avoid activities that require alertness when taking this medication to prevent any potential harm. Monitoring for sedation is crucial to ensure the client's safety and well-being. Choices A, B, and D are incorrect as diarrhea, anxiety, and palpitations are not commonly associated with Dextromethorphan use. While some individuals may experience gastrointestinal upset, central nervous system effects like sedation are more commonly observed.

5. A healthcare provider is providing discharge instructions to a client who is prescribed Warfarin. Which of the following dietary instructions should the provider include?

Correct answer: B

Rationale: The correct answer is to avoid foods high in vitamin K. Vitamin K can interfere with the effectiveness of Warfarin by counteracting its anticoagulant effects. Foods high in vitamin K, such as leafy green vegetables, should be limited in the diet of individuals taking Warfarin to maintain a consistent level of the medication's effectiveness. Choices A, C, and D are incorrect as increasing intake of leafy green vegetables (choice A) and dairy products (choice C) may increase the intake of vitamin K, which is not recommended, and avoiding foods high in iron (choice D) is not directly related to Warfarin therapy.

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