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 is recovering from an acute myocardial infarction that occurred 3 days ago. Which of the following instructions should the nurse include?

Correct answer: D

Rationale: After an acute myocardial infarction, it is important to involve the client in cardiac rehabilitation to help them recover and manage their condition effectively. Performing an ECG every 12 hours is not necessary unless there are specific indications for it. Placing the client in a supine position may not be ideal as it can increase venous return, potentially worsening cardiac workload. Drawing troponin levels every 4 hours is excessive and not recommended as troponin levels usually peak within 24-48 hours post-MI and then gradually decline.

3. A nurse is caring for a client who has deep-vein thrombosis (DVT) and is receiving heparin therapy. Which of the following laboratory values indicates that the client's heparin therapy is effective?

Correct answer: A

Rationale: An aPTT of 75 seconds indicates that heparin therapy is within the therapeutic range for a client with DVT. The activated partial thromboplastin time (aPTT) is used to monitor heparin therapy's effectiveness. Choice B, INR 1.2, is not the correct answer because INR is used to monitor the effectiveness of warfarin, a different anticoagulant, not heparin. Choice C, Hemoglobin 10 g/dL, is not a measure of heparin therapy effectiveness. Choice D, Fibrinogen level 350 mg/dL, is not a specific indicator of heparin therapy effectiveness for DVT.

4. A nurse is planning care for a client who is 1 day postoperative following a total knee arthroplasty. Which of the following interventions should the nurse include?

Correct answer: C

Rationale: Encouraging the client to ambulate as soon as possible is essential in preventing complications like deep vein thrombosis post knee arthroplasty. While keeping the affected leg elevated and applying ice packs can be beneficial in certain situations, early ambulation takes precedence in this case. Performing range-of-motion exercises hourly may not be necessary and could potentially cause more harm than good if not done correctly or excessively.

5. A nurse is teaching a client who has iron deficiency anemia about food choices to increase iron intake. Which of the following foods should the nurse recommend?

Correct answer: D

Rationale: Spinach is an excellent choice to recommend as it is rich in non-heme iron, which can help improve iron levels in clients with iron deficiency anemia. Eggs (Choice A) are a good source of protein but do not contain as much iron as spinach. Carrots (Choice B) are rich in vitamin A but are not a significant source of iron. White bread (Choice C) is not a good source of iron compared to spinach.

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