Nursing Elites

1. What is the primary action of warfarin as an anticoagulant?

• A. Prevents the formation of blood clots
• B. Dissolves existing blood clots
• C. Dilates coronary arteries
• D. Treats rhythm disturbances

Correct answer: A

Rationale: The correct answer is A: "Prevents the formation of blood clots." Warfarin acts as an anticoagulant by inhibiting the synthesis of certain clotting factors in the liver. This action reduces the blood's ability to clot, making it effective in preventing the formation of blood clots. Choice B is incorrect because warfarin does not dissolve existing blood clots; it prevents their formation. Choice C is incorrect because warfarin's primary action is not to dilate coronary arteries. Choice D is incorrect as warfarin is not used to treat rhythm disturbances, but rather to prevent clot formation.

2. When teaching a client with a prescription for long-term use of oral prednisone for chronic asthma, the nurse should instruct the client to monitor for which of the following adverse effects of this medication?

• A. Weight gain
• B. Nervousness
• C. Bradycardia
• D. Constipation

Correct answer: A

Rationale: The correct answer is weight gain. Weight gain and fluid retention are common adverse effects of oral prednisone due to sodium and water retention. Patients on long-term prednisone therapy should be advised to monitor their weight closely and report any significant changes to their healthcare provider. Choice B, 'Nervousness,' is not typically associated with oral prednisone use. Choice C, 'Bradycardia,' refers to a slow heart rate, which is not a common adverse effect of prednisone. Choice D, 'Constipation,' is not a typical adverse effect of oral prednisone; instead, gastrointestinal disturbances like increased appetite or even peptic ulcer disease may occur.

3. During a unit of whole blood transfusion, a client develops a cough, shortness of breath, elevated blood pressure, and distended neck veins. The healthcare professional should anticipate a prescription for which of the following medications?

• A. Epinephrine
• B. Lorazepam
• C. Furosemide
• D. Diphenhydramine

Correct answer: C

Rationale: In the scenario described, the client is exhibiting signs of fluid overload, which can occur during blood transfusion. Furosemide, a loop diuretic, is commonly prescribed in such situations to help relieve manifestations of circulatory overload by promoting diuresis and reducing fluid volume. Therefore, the correct choice is C - Furosemide. Epinephrine (Choice A) is not indicated for fluid overload but for severe allergic reactions. Lorazepam (Choice B) is a benzodiazepine used for anxiety or sedation, not for fluid overload. Diphenhydramine (Choice D) is an antihistamine often used for allergic reactions, not for fluid overload.

4. 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.

5. Which drug classes are NOT typically used to treat angina?

• A. Calcium channel blockers
• B. Organic nitrates
• C. Alpha blockers
• D. Beta blockers

Correct answer: C

Rationale: Angina is primarily treated with calcium channel blockers, organic nitrates, and beta blockers. Alpha blockers are not commonly used in the treatment of angina. Calcium channel blockers help dilate blood vessels, decreasing the workload on the heart. Organic nitrates relax and widen blood vessels, improving blood flow and reducing the heart's workload. Beta blockers reduce the heart rate and blood pressure, decreasing the heart's demand for oxygen. Alpha blockers are more commonly used to treat conditions like hypertension and benign prostatic hyperplasia.

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