which of the following is the primary site of activity for the drug warfarin
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Nursing Elites

ATI RN

ATI Pharmacology Proctored

1. Which of the following is the primary site of activity for the drug Warfarin?

Correct answer: B

Rationale: Warfarin primarily affects the liver where it inhibits the synthesis of clotting factors.

2. A client with active tuberculosis asks why he must take four different medications. Which of the following responses should the nurse make?

Correct answer: B

Rationale: When treating tuberculosis, using a combination of multiple medications is crucial to reduce the risk of bacterial resistance. The use of four medications helps to target the bacteria from different angles, making it harder for them to develop resistance to the treatment. This approach is essential to ensure the effectiveness of the treatment regimen and to prevent the spread of drug-resistant strains of tuberculosis. Choices A, C, and D are incorrect because the primary reason for using multiple medications in tuberculosis treatment is to prevent the development of bacterial resistance, not to decrease the risk of allergic reactions, adverse reactions, or affecting the tuberculin skin test results.

3. A client has a new prescription for metronidazole. The client should avoid which of the following?

Correct answer: B

Rationale: The correct answer is B: Alcohol. Clients should avoid alcohol while taking metronidazole to prevent a disulfiram-like reaction, which can cause symptoms such as nausea, vomiting, headache, and flushing. Alcohol can interact with metronidazole and lead to adverse effects. Choices A, C, and D are not typically contraindicated with metronidazole. Dairy products, leafy green vegetables, and grapefruit juice do not have significant interactions with metronidazole, unlike alcohol.

4. When a client reports urticaria and dyspnea after receiving amoxicillin/clavulanic acid, which medication should be administered first?

Correct answer: A

Rationale: In the scenario described, the client is experiencing symptoms of a severe allergic reaction. The priority intervention is to administer epinephrine. Epinephrine acts quickly to reverse the effects of the allergic reaction and can be life-saving in cases of anaphylaxis. Albuterol is used for bronchodilation and may help with respiratory symptoms but is not the first-line treatment for anaphylaxis. Diphenhydramine and prednisone are used for allergic reactions but are not as rapid-acting as epinephrine and should be considered after administering epinephrine in this situation.

5. A healthcare professional is preparing to administer Filgrastim for the first time to a client who has just undergone a bone marrow transplant. Which of the following interventions is appropriate?

Correct answer: D

Rationale: The correct intervention when preparing to administer Filgrastim is to discard the vial after removing one dose of the medication. This practice helps prevent contamination and ensures the medication's effectiveness. Reusing the vial can lead to contamination and compromise the sterility of the medication, putting the client at risk. Therefore, it is crucial to follow proper aseptic technique and discard the vial after withdrawing the prescribed dose.

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