which lab value is critical for patients on warfarin therapy

ATI RN

ATI RN Exit Exam Test Bank

1. Which lab value is critical for patients on warfarin therapy?

A. Monitor INR
B. Monitor potassium levels
C. Monitor sodium levels
D. Monitor platelet count

Correct answer: A

Rationale: The correct answer is to monitor INR levels for patients on warfarin therapy. INR monitoring is essential because it helps assess the clotting tendency of the blood and ensures that patients are within the therapeutic range to prevent both blood clots and excessive bleeding. Monitoring potassium levels (Choice B), sodium levels (Choice C), or platelet count (Choice D) is not specifically required for patients on warfarin therapy and does not directly impact the effectiveness or safety of the medication.

2. What is the initial intervention for a patient with chest pain?

A. Administer aspirin
B. Administer nitroglycerin
C. Provide pain relief
D. Prepare for surgery

Correct answer: A

Rationale: The correct initial intervention for a patient with chest pain is to administer aspirin. Aspirin helps reduce the risk of clot formation by inhibiting platelet aggregation, which can be beneficial in case the chest pain is due to a cardiac event. Administering nitroglycerin may follow aspirin administration to help relieve chest pain by dilating blood vessels. Providing pain relief is a general approach and may not address the underlying cause of chest pain. Preparing for surgery would not be the initial intervention for chest pain unless there are specific indications for immediate surgical intervention.

3. A nurse is providing teaching to family members of a client who has dementia. Which of the following instructions should the nurse include?

A. Establish a toileting schedule for the client.
B. Use clothing with buttons and zippers.
C. Discourage physical activity during the day.
D. Engage the client in activities that increase sensory stimulation.

Correct answer: A

Rationale: The correct answer is A: Establish a toileting schedule for the client. A toileting schedule helps manage incontinence and prevent accidents, promoting client dignity. Choice B is incorrect because clothing with buttons and zippers may be difficult for a client with dementia to manage independently. Choice C is incorrect as physical activity during the day is beneficial for clients with dementia. Choice D is incorrect as activities that increase sensory stimulation may be overwhelming for a client with dementia.

4. What is the primary purpose of administering an antiemetic?

A. To reduce nausea and vomiting
B. To increase appetite
C. To treat nausea caused by chemotherapy
D. To treat allergic reactions

Correct answer: A

Rationale: The correct answer is A: 'To reduce nausea and vomiting.' Antiemetics are medications used to prevent or alleviate nausea and vomiting. While they may indirectly help with appetite by reducing the unpleasant symptoms that can lead to decreased food intake, their primary purpose is not to increase appetite (Choice B). Choice C, 'To treat nausea caused by chemotherapy,' is partly correct as antiemetics are commonly used to manage chemotherapy-induced nausea, but this is not their exclusive purpose. Choice D, 'To treat allergic reactions,' is incorrect as antiemetics are not primarily used for treating allergic reactions.

5. A nurse is reviewing the laboratory values of a client who has liver cirrhosis. Which of the following findings should the nurse report to the provider?

A. Bilirubin 0.8 mg/dL
B. Ammonia 35 mcg/dL
C. Prothrombin time 16 seconds
D. Albumin 4 g/dL

Correct answer: C

Rationale: In clients with liver cirrhosis, an elevated prothrombin time indicates impaired liver function and decreased production of clotting factors. This finding should be reported to the provider for further evaluation and management. Choices A, B, and D are within normal ranges and do not specifically indicate worsening liver cirrhosis. Bilirubin 0.8 mg/dL is normal, ammonia 35 mcg/dL is within the reference range, and albumin 4 g/dL is also within the normal range for this client population.