a patient with atrial fibrillation is prescribed warfarin which laboratory test should the nurse monitor to assess the effectiveness of the medication
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1. A patient with atrial fibrillation is prescribed warfarin. Which laboratory test should the nurse monitor to assess the effectiveness of the medication?

Correct answer: B

Rationale: The correct answer is B: Prothrombin time (PT)/INR. Warfarin affects the clotting ability of the blood by inhibiting vitamin K-dependent clotting factors. Monitoring the prothrombin time (PT) and international normalized ratio (INR) is crucial to assess the effectiveness and safety of warfarin therapy. These tests help determine if the patient is within the desired anticoagulation range to prevent either clotting issues or excessive bleeding.

2. When a client expresses, 'I don't know how I will go on' while discussing feelings related to a recent loss, the nurse remains silent. What is the most likely reason for the nurse's behavior?

Correct answer: D

Rationale: In therapeutic communication, silence can offer the client an opportunity to process their emotions and thoughts. By remaining silent, the nurse provides a space for the client to reflect on their own words, facilitating deeper exploration and understanding of their feelings.

3. The client with a history of heart failure is taking furosemide (Lasix). Which laboratory result should the nurse monitor closely?

Correct answer: B

Rationale: Furosemide (Lasix) is a loop diuretic that can lead to potassium loss, causing hypokalemia. Monitoring serum potassium levels is crucial to prevent complications such as cardiac dysrhythmias associated with low potassium levels.

4. A 56-year-old woman with rheumatoid arthritis has severe joint pain and swelling in her hands. She has a history of peptic ulcer disease five years ago but presently has no GI symptoms. You elect to start her on an NSAID. Which of the following is correct?

Correct answer: B

Rationale: In this scenario, the patient's history of peptic ulcer disease puts her at risk for NSAID-related GI toxicity. Misoprostol and proton-pump inhibitors have shown superiority over H2-blockers in preventing NSAID-related GI toxicity. H. pylori infection can indeed increase the risk of an NSAID-induced ulcer in infected patients who are starting NSAID therapy. Sucralfate has not been proven to be effective in prophylaxis against NSAID-related GI toxicity. Therefore, the correct choice is B, as misoprostol is the preferred option over an H2-blocker in this context.

5. The community mental health nurse is planning to visit four clients with schizophrenia today. Which client should the nurse see first?

Correct answer: A

Rationale: The mother who took her children from school due to delusions of aliens poses a significant risk to her children and herself. This situation requires immediate attention to ensure the safety and well-being of all involved. Choice B is concerning due to the history of substance abuse, but the immediate risk to life and safety as in Choice A takes precedence. Choice C, although important, does not present an immediate danger as the delusional belief of aliens. Choice D, while emotionally distressing, does not pose an immediate threat as the situation described in Choice A.

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