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 teaching a client who has a new diagnosis of type 1 diabetes mellitus. Which of the following findings should the nurse identify as a manifestation of hypoglycemia?

Correct answer: B

Rationale: Irritability is a common early manifestation of hypoglycemia. When blood glucose levels drop, the brain perceives this as a stressor, leading to irritability. Abdominal cramps (choice A) are not typically associated with hypoglycemia but can occur with other gastrointestinal issues. Increased thirst (choice C) is more indicative of hyperglycemia rather than hypoglycemia. Blurred vision (choice D) is a symptom more commonly associated with hyperglycemia rather than hypoglycemia.

3. A client is receiving total parenteral nutrition (TPN). Which of the following actions should the nurse take?

Correct answer: B

Rationale: The correct action for the nurse to take when caring for a client receiving total parenteral nutrition (TPN) is to change the TPN tubing every 24 hours. This practice helps reduce the risk of infection in clients receiving parenteral nutrition. Measuring the client's blood glucose level every 6 hours is important for clients on insulin therapy or with diabetes, but it is not directly related to TPN administration. Weighing the client weekly is essential for monitoring fluid status and nutritional progress, but it is not specific to TPN care. Administering TPN through a peripheral IV line is incorrect because TPN solutions are hypertonic and can cause phlebitis or thrombosis if administered through a peripheral line; a central venous access is typically used for TPN administration.

4. A healthcare professional is caring for a client who has an arteriovenous fistula. Which of the following findings should the healthcare professional report?

Correct answer: B

Rationale: The correct answer is B: Absence of a bruit. In a client with an arteriovenous fistula, the presence of a bruit (a humming sound) is an expected finding due to the high-pressure flow of blood through the fistula. Therefore, the absence of a bruit suggests a complication, such as thrombosis or stenosis, which should be reported for further evaluation and management. Choices A, C, and D are incorrect because a thrill upon palpation, distended blood vessels, and a swishing sound upon auscultation are expected findings in a client with an arteriovenous fistula and do not necessarily indicate a complication.

5. Which medication is commonly used to treat hyperthyroidism?

Correct answer: A

Rationale: Methimazole is the correct answer. It is commonly used to treat hyperthyroidism by inhibiting the production of thyroid hormones. Levothyroxine, on the other hand, is a medication used to treat hypothyroidism by providing synthetic thyroid hormone. Propylthiouracil is another medication used to treat hyperthyroidism by blocking the production of thyroid hormones. Aspirin is not used to treat hyperthyroidism, but rather for pain relief and reducing inflammation.

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