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 1 day postoperative following abdominal surgery. Which of the following actions should the nurse take to prevent respiratory complications?

Correct answer: B

Rationale: Encouraging the use of an incentive spirometer is crucial for preventing respiratory complications postoperatively, such as atelectasis. Instructing the client to avoid deep breathing exercises (choice A) is incorrect as deep breathing exercises help prevent respiratory complications. Assisting with ambulation every 2 hours (choice C) is important for preventing other postoperative complications but not specifically respiratory ones. Applying sequential compression devices (SCDs) (choice D) is beneficial for preventing deep vein thrombosis but not directly related to respiratory complications.

3. A nurse is reviewing the laboratory values of a client who is receiving heparin therapy for deep-vein thrombosis. Which of the following values should the nurse report to the provider?

Correct answer: C

Rationale: The correct answer is C: aPTT 60 seconds. An aPTT of 60 seconds is above the therapeutic range for clients on heparin therapy and indicates a risk of bleeding, so it should be reported to the provider. INR of 2.0 is within the therapeutic range for clients on heparin therapy, so it does not require immediate reporting. Platelet count of 150,000/mm3 and WBC count of 8,000/mm3 are within normal ranges and not directly related to heparin therapy, so they do not need to be reported in this context.

4. A client is postoperative following a thyroidectomy. Which of the following findings should the nurse identify as an indication of hypocalcemia?

Correct answer: B

Rationale: Numbness and tingling of the fingers are classic signs of hypocalcemia, a condition that may result from inadvertent damage to the parathyroid glands during a thyroidectomy. These symptoms occur due to decreased levels of calcium in the bloodstream affecting nerve function. Choices A, C, and D are not typical manifestations of hypocalcemia. Constipation is more associated with hypercalcemia, increased thirst can be seen in diabetes or dehydration, and frequent urination is a symptom more commonly linked to conditions like diabetes or urinary tract issues.

5. A nurse is providing teaching to a client who is receiving radiation therapy for cancer of the larynx. Which of the following instructions should the nurse include?

Correct answer: B

Rationale: The correct answer is to use a soft-bristle toothbrush to prevent gum irritation in clients undergoing radiation therapy for laryngeal cancer. Radiation therapy can cause oral mucositis and increase the risk of gum irritation, so using a soft-bristle toothbrush is recommended to minimize trauma to the gums and oral mucosa. Applying heat to the neck is contraindicated as it can exacerbate tissue damage caused by radiation. Rinsing the mouth with an alcohol-free mouthwash is preferred over an alcohol-based one to prevent drying and irritation of the oral mucosa. Wearing loose-fitting clothing is advised to prevent friction and irritation on the skin, rather than tight-fitting clothing that may cause pressure ulcers or skin breakdown.

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