a nurse is caring for a client who has a new prescription for warfarin which of the following laboratory tests should the nurse use to monitor the cli
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Nursing Elites

ATI RN

ATI Comprehensive Exit Exam

1. A nurse is caring for a client who has a new prescription for warfarin. Which of the following laboratory tests should the nurse use to monitor the client's therapeutic response to the medication?

Correct answer: A

Rationale: The correct answer is A: INR. The INR (International Normalized Ratio) is the laboratory test used to monitor the therapeutic response of warfarin. It helps ensure that the client's clotting time is within the desired range to prevent complications such as excessive bleeding or clotting. Choice B, aPTT (Activated Partial Thromboplastin Time), is not typically used to monitor warfarin therapy but rather for assessing heparin therapy. Choice C, Platelet count, assesses the number of platelets in the blood and is not specifically used to monitor warfarin therapy. Choice D, Hemoglobin A1C, is a test used to monitor long-term blood sugar control in diabetic patients and is not relevant to monitoring warfarin therapy.

2. A nurse is teaching a prenatal class about infection. Which statement by the client indicates further teaching is required?

Correct answer: C

Rationale: The correct answer is C because cleaning a cat's litter box during pregnancy can increase the risk of toxoplasmosis, which can be harmful to the developing fetus. Choice A is correct as the statement indicates understanding of the chickenpox transmission timeline. Choice B is also correct as high folic acid foods are beneficial during pregnancy. Choice D is correct as washing hands with hot water after gardening helps prevent infections.

3. A nurse is caring for a client who has a nasogastric tube in place. Which of the following actions should the nurse take to prevent aspiration?

Correct answer: A

Rationale: The correct action to prevent aspiration in a client with a nasogastric tube is to elevate the head of the bed to 45 degrees during feedings. This positioning helps reduce the risk of regurgitation and aspiration of gastric contents. Placing the client in the left lateral position after feedings does not directly prevent aspiration. Flushing the tube with sterile water before each feeding is important for tube patency but does not specifically prevent aspiration. Checking gastric residuals every 8 hours is necessary to monitor the client's tolerance to feedings but is not a direct preventive measure against aspiration.

4. A nurse is caring for a client who has a new diagnosis of rheumatoid arthritis. Which of the following laboratory findings should the nurse expect?

Correct answer: D

Rationale: The correct answer is D: Positive rheumatoid factor. A positive rheumatoid factor is a common laboratory finding in clients with rheumatoid arthritis, indicating an autoimmune response. Option A, increased WBC count, is not typically associated with rheumatoid arthritis. Option B, decreased hemoglobin, and option C, decreased platelet count, are not specific laboratory findings for rheumatoid arthritis.

5. A client who is at 30 weeks of gestation and is scheduled for a nonstress test is being taught by a nurse. Which of the following statements by the client indicates an understanding of the teaching?

Correct answer: B

Rationale: The correct answer is B because the client should drink a sugar solution for a glucose challenge test, which is part of the nonstress test protocol during pregnancy. Choice A is incorrect because adequate hydration is generally recommended before the test. Choice C is incorrect as the nonstress test monitors the baby's heart rate in response to its own movements, not contractions. Choice D is incorrect as the nonstress test does not assess fetal lung maturity.

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