which lab value is essential for a patient receiving warfarin therapy
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Nursing Elites

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ATI RN Exit Exam Test Bank

1. Which lab value is essential for a patient receiving warfarin therapy?

Correct answer: A

Rationale: The correct answer is to monitor the INR (International Normalized Ratio) for a patient receiving warfarin therapy. INR monitoring is crucial to assess the effectiveness of warfarin in preventing blood clots while minimizing the risk of bleeding. Monitoring sodium levels (choice B), potassium levels (choice C), or platelet count (choice D) is not specifically essential for patients on warfarin therapy and does not provide direct information on the drug's anticoagulant effects.

2. A nurse is preparing to administer an IV medication to a client who has an allergy to latex. Which of the following actions should the nurse take?

Correct answer: C

Rationale: The correct action for the nurse to take when preparing to administer IV medication to a client with a latex allergy is to administer the medication through a latex-free IV port. This is crucial as it prevents direct contact of the medication with latex, reducing the risk of an allergic reaction. Choice A is incorrect as using latex gloves can still expose the client to latex. Choice B is not the best option since the administration route is not specified, and using a latex-free syringe alone may not be sufficient to prevent exposure. Choice D is not the most appropriate because the IV tubing and ports should also be latex-free to ensure complete avoidance of latex contact.

3. A client with deep vein thrombosis receiving heparin therapy needs monitoring. Which test should the nurse use to regulate the medication dosage?

Correct answer: C

Rationale: The correct answer is C: Activated partial thromboplastin time (aPTT). aPTT is specifically used to monitor and regulate heparin therapy as it assesses the intrinsic pathway of coagulation, which heparin affects. Options A and B, Prothrombin time (PT) and International Normalized Ratio (INR), are used to monitor warfarin therapy, not heparin. Option D, Fibrinogen levels, is not the primary test used to monitor heparin therapy.

4. A nurse is caring for a client who has a new prescription for levothyroxine. Which of the following laboratory values should the nurse monitor to determine the effectiveness of the medication?

Correct answer: C

Rationale: The correct answer is C: Thyroid-stimulating hormone (TSH). Monitoring TSH levels is crucial to assess the effectiveness of levothyroxine in clients with hypothyroidism. TSH is produced by the pituitary gland and stimulates the thyroid gland to produce thyroid hormones. In hypothyroidism, where the thyroid gland is underactive, administering levothyroxine helps to normalize thyroid hormone levels. Monitoring TSH levels allows the healthcare provider to adjust the levothyroxine dosage to ensure that thyroid hormone levels are within the therapeutic range. Choices A, B, and D (Calcium, Sodium, and Magnesium) are not directly related to assessing the effectiveness of levothyroxine therapy in hypothyroidism and would not provide relevant information regarding the medication's efficacy.

5. A nurse is admitting a client who is in labor and at 38 wks of gestation to the maternal newborn unit. The client has a history of herpes simplex virus 2. Which of the following questions is most appropriate for the nurse to ask the client?

Correct answer: C

Rationale: The most appropriate question for the nurse to ask the client in this situation is whether they have any active lesions due to the history of herpes simplex virus. This is crucial to assess the risk of transmission to the newborn during labor. Option A is not the priority in this case as the focus is on the client's history of herpes simplex virus. Option B is important but does not directly relate to the risk of herpes simplex virus transmission. Option D is unrelated to the client's condition and the current situation.

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