which lab value is critical for monitoring warfarin therapy
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Nursing Elites

ATI RN

ATI RN Comprehensive Exit Exam

1. Which lab value is critical for monitoring warfarin therapy?

Correct answer: A

Rationale: The correct answer is A: Monitor INR. INR (International Normalized Ratio) is crucial for monitoring warfarin therapy as it helps assess the therapeutic effectiveness and bleeding risks associated with the medication. INR measures the clotting tendency of blood, which is essential in determining the appropriate dosage of warfarin. Monitoring platelet count (B), sodium levels (C), or calcium levels (D) is not primarily used for assessing warfarin therapy. Platelet count is more relevant in assessing bleeding disorders, while sodium and calcium levels are typically monitored for different medical conditions unrelated to warfarin therapy.

2. What is the best initial action when a patient presents with confusion?

Correct answer: B

Rationale: When a patient presents with confusion, the best initial action is to perform a neurological assessment. This assessment helps in identifying potential causes of confusion such as neurological issues, infections, metabolic abnormalities, or medication side effects. Administering IV fluids (Choice A) may be necessary based on assessment findings, but it is not the first step. Administering electrolytes (Choice C) would also depend on the assessment results. Preparing for a CT scan (Choice D) may be indicated later in the diagnostic process but is not the initial action when a patient presents with confusion.

3. A nurse is providing discharge teaching to a client who has a wound infection. Which of the following information should the nurse include about home care?

Correct answer: D

Rationale: The correct answer is D: 'Keep the wound covered with a dry dressing.' When providing care for a wound infection, it is essential to keep the wound covered with a dry dressing to prevent further contamination and promote healing. Soaking the wound in warm water (choice A) can introduce moisture and increase the risk of infection. Using hydrogen peroxide (choice B) can be too harsh and may slow down the healing process by damaging healthy tissue. Applying a cold compress (choice C) is not typically recommended for wound infections, as it may not provide the necessary environment for healing.

4. During a change-of-shift report, a nurse is receiving information about an adult female client who is postoperative. Which of the following client information should the nurse report?

Correct answer: B

Rationale: The correct answer is B because a blood pressure of 110/70 mm Hg is within the normal range and stable. Reporting this information is crucial to monitor the client's condition postoperatively. Oxygen saturation of 95% is acceptable, a temperature of 36.8°C (98.2°F) is normal, and a heart rate of 88/min is within the expected range for an adult female client, so these values do not raise concerns that require immediate reporting.

5. A nurse is caring for a client who has depression and reports taking St. John's Wort along with citalopram. The nurse should monitor the client for which condition as a result of an interaction between these substances?

Correct answer: B

Rationale: The correct answer is B: Serotonin syndrome. Serotonin syndrome can occur due to the interaction between citalopram, an SSRI, and St. John's Wort, an herbal supplement. Symptoms of serotonin syndrome include confusion, agitation, rapid heart rate, high blood pressure, dilated pupils, loss of muscle coordination, and sweating. Choices A, C, and D are incorrect as they are not typically associated with the interaction between citalopram and St. John's Wort. Tardive dyskinesia is a movement disorder associated with long-term use of certain medications, pseudoparkinsonism is a side effect of certain antipsychotic medications, and acute dystonia is a movement disorder caused by certain medications like antipsychotics.

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