warfarin is an anticoagulant that
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ATI RN

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. When a client is prescribed hydrochlorothiazide, what adverse effect should they monitor for as instructed by the nurse?

Correct answer: A

Rationale: Hyponatremia is a critical adverse effect associated with hydrochlorothiazide use. This medication is a diuretic that can lead to excessive loss of sodium and water from the body, potentially causing low sodium levels and resulting in hyponatremia. Monitoring for signs and symptoms of hyponatremia, such as confusion, headache, weakness, and muscle cramps, is essential to prevent serious complications. Ototoxicity (choice B) is not a common adverse effect of hydrochlorothiazide. Hypoglycemia (choice C) and hyperkalemia (choice D) are also not typically associated with hydrochlorothiazide use.

3. A client is receiving discharge teaching for a new prescription of Fluoxetine for PTSD. Which of the following statements should be included in the teaching?

Correct answer: A

Rationale: One of the potential adverse effects of fluoxetine and other SSRIs is a decreased libido, which can impact intimacy. It is essential for the nurse to educate the client about this possible side effect to promote awareness and understanding of the medication's effects.

4. When teaching a client about preventing Otitis Externa, which of the following instructions should the nurse include?

Correct answer: D

Rationale: To prevent Otitis Externa, the nurse should instruct the client to tip the head to the side to allow water to drain out after showering or swimming. This helps to prevent moisture buildup in the ear canal, reducing the risk of developing Otitis Externa, commonly known as swimmer's ear.

5. A client is prescribed Diltiazem. Which of the following findings should the nurse monitor?

Correct answer: B

Rationale: Diltiazem is a calcium channel blocker that can cause bradycardia as an adverse effect due to its negative chronotropic properties, slowing down the heart rate. Therefore, the nurse should monitor the client for signs of bradycardia by regularly assessing the heart rate to prevent potential complications. Monitoring for tachycardia (choice A) is incorrect as diltiazem typically does not cause tachycardia. Hypertension (choice C) is not a typical finding to monitor for with diltiazem use. Hyperkalemia (choice D) is not directly associated with diltiazem administration.

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