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

Correct answer: C

Rationale: The correct answer is C: "I should remain upright for at least 30 minutes after taking this medication." This statement indicates understanding because clients taking alendronate should remain upright for at least 30 minutes after taking the medication to prevent esophageal irritation. Choice A is incorrect because alendronate should be taken with a full glass of water after waking up, not before breakfast. Choice B is incorrect because alendronate should be taken on an empty stomach, not with food. Choice D is incorrect because alendronate should be taken separately from antacids.

3. A nurse is assessing a client who is postoperative following a hip arthroplasty. Which of the following findings is the priority for the nurse to report?

Correct answer: C

Rationale: The correct answer is C, warmth and redness in the calf. These symptoms may indicate a deep vein thrombosis (DVT), a serious complication following hip arthroplasty that requires immediate attention. A heart rate of 90/min and blood pressure of 118/76 mm Hg are within normal ranges for a postoperative client and do not indicate an urgent issue. Pink-tinged urine may suggest blood in the urine, which should be monitored but is not as critical as the potential DVT.

4. A nurse is reviewing the results of an arterial blood gas analysis of a client who has chronic obstructive pulmonary disease. Which of the following results should the nurse expect?

Correct answer: B

Rationale: In chronic obstructive pulmonary disease, there is impaired gas exchange, leading to retention of carbon dioxide (CO2) and subsequent respiratory acidosis. A PaCO2 of 55 mm Hg is higher than the normal range (35-45 mm Hg) and is indicative of respiratory acidosis in COPD. Choices A, C, and D are not typically associated with COPD. PaO2 may be decreased, HCO3 may be elevated to compensate for acidosis, and pH may be lower than 7.35 due to respiratory acidosis in COPD.

5. What is the appropriate action for a patient experiencing a severe allergic reaction?

Correct answer: A

Rationale: The correct answer is to administer epinephrine. Epinephrine is the first-line treatment for severe allergic reactions as it helps reverse the symptoms rapidly by constricting blood vessels, increasing heart rate, and opening airways. Antihistamines (Choice B) may help with mild allergic reactions but are not effective for severe cases. Corticosteroids (Choice C) are used to reduce inflammation and are typically not the first-line treatment for acute severe allergic reactions. Administering oxygen (Choice D) may be necessary to support breathing in severe cases, but epinephrine is the primary treatment to reverse the allergic reaction symptoms.

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