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. A nurse is discussing group treatment and therapy with a client. The nurse should include which of the following as being a characteristic of a therapeutic group?

Correct answer: B

Rationale: The correct answer is B. Therapeutic groups indeed encourage members to focus on particular issues. This focus helps individuals address specific concerns, work through challenges, and support one another in a structured setting. Choice A is incorrect because therapeutic groups typically promote a democratic structure that values input from all members rather than an autocratic one. Choice C is incorrect as therapeutic groups can be led by various mental health professionals, not solely by licensed psychiatrists. Choice D is incorrect; therapeutic groups aim to foster independent growth and self-reliance rather than promoting dependent relationships.

3. A client is being discharged two days after a mastectomy. Which of the following instructions should the nurse include?

Correct answer: B

Rationale: The correct answer is to instruct the client to avoid lifting heavy objects for at least 6 weeks after a mastectomy. This is important to prevent complications and promote proper healing. Choice A is incorrect because tight-fitting bras can increase the risk of lymphedema and discomfort. Choice C is incorrect as sleeping on the affected side can cause discomfort and interfere with healing. Choice D is incorrect as initiating arm exercises too soon after surgery can strain the surgical site and hinder recovery.

4. A healthcare provider is caring for a client who has been diagnosed with sepsis. Which of the following laboratory results indicates that the client is developing disseminated intravascular coagulation (DIC)?

Correct answer: D

Rationale: The correct answer is D, decreased platelet count. In disseminated intravascular coagulation (DIC), there is widespread activation of clotting factors leading to the formation of multiple blood clots throughout the body, which can deplete platelets. A decreased platelet count is a hallmark of DIC. Elevated hemoglobin (choice A) and elevated white blood cell count (choice B) are not specific indicators of DIC. While fibrinogen levels (choice C) can be decreased in DIC due to consumption, a decreased platelet count is a more specific and early sign of DIC development.

5. A nurse is assessing a client who has syndrome of inappropriate antidiuretic hormone (SIADH). Which of the following findings should the nurse expect?

Correct answer: C

Rationale: In clients with Syndrome of Inappropriate Antidiuretic Hormone (SIADH), the nurse should expect hyponatremia. SIADH leads to excess water retention, diluting the sodium levels in the blood, resulting in low serum sodium levels. Choice A, increased urine output, is incorrect as SIADH causes water retention, leading to decreased urine output. Choice B, increased serum sodium, is incorrect because SIADH causes a dilutional effect due to water retention, resulting in decreased serum sodium levels. Choice D, hypercalcemia, is unrelated to SIADH and not a typical finding.

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