Nursing Elites

1. A client who has a new prescription for warfarin (Coumadin) asks the nurse how the medication works. What explanation should the nurse provide?

• A. It dissolves blood clots
• B. It prevents the blood from clotting
• C. It thins the blood
• D. It decreases the risk of infection

Correct answer: B

Rationale: The correct answer is B: 'It prevents the blood from clotting.' Warfarin works by inhibiting the synthesis of vitamin K-dependent clotting factors in the liver, thereby preventing the formation of blood clots. Choice A is incorrect because warfarin does not dissolve existing blood clots but prevents new ones from forming. Choice C is partially correct but not as specific as choice B in explaining how warfarin works. Choice D is unrelated to the mechanism of action of warfarin and is incorrect.

2. A male client with diabetes mellitus takes Novolin 70/30 insulin before meals and azithromycin (Zithromax) PO daily, using medication he brought from home. When the nurse delivers his breakfast tray, the client tells the nurse that he took his insulin but forgot to take his daily dose of the Zithromax an hour before breakfast as instructed. What action should the nurse implement?

• A. Offer to obtain a new breakfast tray in an hour so the client can take the Zithromax
• B. Instruct the client to eat his breakfast and take the Zithromax two hours after eating
• C. Tell the client to skip that day's dose and resume taking the Zithromax the next day
• D. Provide a PRN dose of an antacid to take with the Zithromax right after breakfast

Correct answer: B

Rationale: To ensure the effectiveness of the antibiotic and manage blood glucose levels, the client should take the Zithromax two hours after eating. Option A is incorrect because obtaining a new breakfast tray is not necessary to administer the missed dose. Option C is incorrect as skipping a dose can lead to decreased effectiveness of the antibiotic. Option D is incorrect because providing an antacid is not indicated in this situation.

3. Which assessment finding is most indicative of deep vein thrombosis (DVT) in a client's right leg?

• A. Dorsiflexes the right foot and left on command
• B. A 3 by 5 cm ecchymosis area covering the right calf
• C. Right calf is 3 cm larger in circumference than the left
• D. Bilateral lower extremity has 3+ pitting edema

Correct answer: C

Rationale: The correct answer is C because a significant increase in the circumference of the right calf compared to the left calf is a classic sign of deep vein thrombosis (DVT). Option A is incorrect as dorsiflexing the right foot and left on command does not specifically indicate DVT. Option B describes an ecchymosis area which is more indicative of a bruise rather than DVT. Option D suggests bilateral lower extremity edema, which is not specific to DVT and can be seen in various conditions such as heart failure or renal issues.

4. What assessment technique should the nurse use to monitor a client for a common untoward effect of phenytoin (Dilantin)?

• A. Bladder palpation
• B. Inspection of the mouth
• C. Blood glucose monitoring
• D. Auscultation of breath sounds

Correct answer: B

Rationale: The correct answer is B: Inspection of the mouth. This assessment technique is crucial for monitoring gingival hyperplasia, a common side effect of phenytoin. Bladder palpation (choice A) is not relevant to monitoring for phenytoin's side effects. Blood glucose monitoring (choice C) is important for clients with diabetes but is not specifically related to phenytoin. Auscultation of breath sounds (choice D) is more relevant for assessing respiratory conditions, not side effects of phenytoin.

5. A client with a history of seizures is being discharged with a prescription for phenytoin (Dilantin). Which instruction should the nurse provide this client?

• A. Take the medication with meals
• B. Avoid alcohol while taking this medication
• C. Limit sodium intake
• D. Take the medication at bedtime

Correct answer: B

Rationale: The correct instruction is to advise the client to avoid alcohol while taking phenytoin. Alcohol can interact with phenytoin, making it less effective and leading to increased side effects. Taking the medication with meals (Choice A) may help reduce gastrointestinal upset but is not the most crucial instruction for this medication. Limiting sodium intake (Choice C) is not directly related to phenytoin therapy. Taking the medication at bedtime (Choice D) is not a standard instruction for phenytoin administration.

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