warfarin is an anticoagulant that
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ATI Pharmacology Proctored Exam 2023 Quizlet

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

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. A client is starting therapy with paclitaxel. Which of the following adverse effects should the nurse instruct the client to monitor?

Correct answer: C

Rationale: Neutropenia is a common adverse effect of paclitaxel due to bone marrow suppression. Clients should be instructed to monitor for signs of infection and report any symptoms such as fever, chills, or sore throat immediately to their healthcare provider.

3. When teaching a client with a new prescription for Amiodarone, which instruction should the nurse include?

Correct answer: B

Rationale: The correct instruction is to avoid drinking grapefruit juice when taking Amiodarone. Grapefruit juice can inhibit the metabolism of Amiodarone, leading to increased blood levels of the drug and potentially causing adverse effects like cardiac toxicity. Choices A, C, and D are incorrect because taking Amiodarone with meals, at bedtime, or increasing sodium-rich foods intake are not relevant instructions for this medication.

4. A client reports using over-the-counter calcium carbonate antacid. Which of the following recommendations should the nurse make about taking this medication?

Correct answer: D

Rationale: The correct recommendation for taking calcium carbonate antacid is to drink a glass of water after taking the medication. This practice enhances the effectiveness of the antacid by promoting its dissolution and absorption in the stomach, providing relief from symptoms of heartburn and indigestion. Choices A, B, and C are incorrect. Choice A is not relevant as calcium carbonate antacid does not typically cause diarrhea. Choice B is inaccurate as taking calcium carbonate with dairy products may decrease its absorption due to the presence of calcium in both sources. Choice C is unrelated to the administration of calcium carbonate antacid.

5. A client with asthma has new prescriptions for cromolyn and albuterol by nebulizer. Which statement by the client indicates an understanding of the teaching?

Correct answer: B

Rationale: The correct answer is B. Taking albuterol before cromolyn ensures that the airways are open, allowing the cromolyn to reach the lungs effectively. Choice A is incorrect because cromolyn is a preventive medication and should be used regularly, not just when symptoms worsen. Choice C is incorrect because medications should be used as prescribed, not based on a specific event like exercising. Choice D is incorrect because there is no need to wait 10 minutes between administering these two medications when using a nebulizer.

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