which lab value is critical for a patient on heparin therapy
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Nursing Elites

ATI RN

ATI RN Exit Exam

1. Which lab value is critical for a patient on heparin therapy?

Correct answer: A

Rationale: The correct answer is to monitor aPTT. Activated Partial Thromboplastin Time (aPTT) is crucial for patients on heparin therapy as it helps determine the clotting ability of the blood. By monitoring aPTT, healthcare providers can adjust the dosage of heparin to maintain therapeutic levels and prevent bleeding complications. Monitoring INR is more commonly associated with warfarin therapy, not heparin. Monitoring platelet count is important for assessing the risk of bleeding or clotting disorders but is not specific to heparin therapy. Monitoring sodium levels is not directly related to assessing the effectiveness or safety of heparin therapy.

2. A nurse is caring for a client who has a wound infection and is receiving gentamicin. Which of the following laboratory values should the nurse monitor to detect an adverse effect of this medication?

Correct answer: A

Rationale: The correct answer is A: Creatinine. Gentamicin can cause nephrotoxicity, leading to impaired kidney function. Monitoring creatinine levels helps the nurse detect any potential kidney damage. Choice B, Aspartate aminotransferase (AST), is not typically affected by gentamicin. Choice C, White blood cell count, is not directly related to gentamicin adverse effects. Choice D, Serum glucose, is not specifically monitored for gentamicin adverse effects.

3. A nurse is providing teaching to a client who has a new prescription for atorvastatin. Which of the following instructions should the nurse include?

Correct answer: A

Rationale: The correct answer is A: 'Avoid drinking grapefruit juice while taking this medication.' Grapefruit juice can increase the risk of toxicity when taken with atorvastatin. Choice B is incorrect because atorvastatin should be taken without regard to meals. Choice C is incorrect because atorvastatin can be taken at any time of the day. Choice D is incorrect because atorvastatin does not need to be taken on an empty stomach.

4. A nurse is caring for a client who has pneumonia. Which of the following findings should the nurse identify as an indication of the effectiveness of the treatment?

Correct answer: D

Rationale: Clear breath sounds are an essential indicator of effective pneumonia treatment as they suggest resolution of the lung infection. A normal respiratory rate (A) indicates adequate breathing but does not directly reflect the effectiveness of pneumonia treatment. An elevated white blood cell count (B) is a sign of infection and may not decrease immediately with treatment. While maintaining an SpO2 of 95% (C) is crucial for oxygenation, it may not directly indicate the effectiveness of pneumonia treatment.

5. A client who has a new prescription for levothyroxine is being taught by a nurse. Which of the following client statements indicates an understanding of the teaching?

Correct answer: A

Rationale: The correct answer is A: ''I will need to take this medication for the rest of my life.'' Levothyroxine is a lifelong medication for clients with hypothyroidism and should be taken as prescribed. Choice B is incorrect because levothyroxine should not be taken with antacids as they can interfere with its absorption. Choice C is incorrect as iodine-containing foods do not need to be avoided with levothyroxine. Choice D is incorrect because levothyroxine should be stored at room temperature, not in the refrigerator.

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