Nursing Elites

1. When a client has a new prescription for Warfarin, which of the following foods should they avoid based on the nurse's instructions?

• A. Broccoli
• B. Bananas
• C. Chicken
• D. Potatoes

Correct answer: A

Rationale: Clients prescribed Warfarin should avoid foods high in vitamin K, like broccoli, as they can counteract the medication's effectiveness. Warfarin works by inhibiting vitamin K-dependent clotting factors, so consuming high vitamin K foods can interfere with its anticoagulant effects. Bananas, chicken, and potatoes are not high in vitamin K and do not have a significant impact on Warfarin therapy.

2. A client has a new prescription for a Nitroglycerin transdermal patch. Which of the following instructions should the nurse include?

• A. Apply the patch to the same site each day.
• B. Remove the patch at night.
• C. Cover the patch with a heating pad.
• D. Apply the patch to a hairless area of skin.

Correct answer: D

Rationale: The correct instruction is to apply the Nitroglycerin transdermal patch to a hairless area of skin. This ensures proper absorption of the medication. It is important to rotate the application site daily to prevent skin irritation and tolerance development. Applying the patch to the same site each day can lead to decreased efficacy and potential skin reactions. Removing the patch at night is not necessary as the patches are usually worn continuously to provide constant medication delivery. Covering the patch with a heating pad can increase the absorption of the medication and lead to an overdose, which is not recommended.

3. An older adult client has a new prescription for Digoxin and takes multiple other medications. The nurse should recognize that concurrent use of which of the following medications places the client at risk for Digoxin toxicity?

• A. Phenytoin
• B. Verapamil
• C. Warfarin
• D. Aluminum hydroxide

Correct answer: B

Rationale: Verapamil, a calcium-channel blocker, can increase digoxin levels, leading to toxicity. When given together, the digoxin dosage may need adjustment, and the nurse should closely monitor the client's digoxin levels to prevent toxicity symptoms such as nausea, vomiting, visual disturbances, and arrhythmias. The other choices, Phenytoin, Warfarin, and Aluminum hydroxide, do not significantly interact with Digoxin to cause toxicity. Phenytoin may reduce Digoxin levels, while Warfarin and Aluminum hydroxide have minimal interactions with Digoxin.

4. What is the therapeutic use of Phenytoin?

• A. Replacement in hypothyroidism to restore normal hormonal balance
• B. Diminished accumulation of acid in the gastric lumen with lessened gastroesophageal reflux
• C. Diminished seizure activity, termination of ventricular arrhythmias
• D. Prevention of thrombus formation, prevention of extension of existing thrombi

Correct answer: C

Rationale: Phenytoin is primarily used to diminish seizure activity and is effective in terminating ventricular arrhythmias. It works by stabilizing neuronal membranes, reducing repetitive neuronal firing, and limiting the spread of seizure activity in the brain. While phenytoin does not have a direct role in preventing thrombus formation or extending existing thrombi, it is crucial in managing seizures and certain arrhythmias.

5. When administering the drug senna to a patient, what must a health care provider inform the patient of?

• A. This drug is intended to lower blood pressure and is best used in combination with other antihypertensives
• B. This drug is not intended for long-term use
• C. The patient must limit his/her fiber intake
• D. Advise the patient to change positions slowly to limit the risk of orthostatic hypotension

Correct answer: B

Rationale: The correct answer is B. Senna is a laxative used for short-term relief of constipation, not for long-term use. Choice A is incorrect because senna does not lower blood pressure or require combination with antihypertensives. Choice C is unrelated as there is no need to limit fiber intake with senna. Choice D is incorrect as orthostatic hypotension is not a common concern with senna use.

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