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.

Correct Answer: A

Rationale: Administering analgesics is the most effective intervention for a patient experiencing acute pain as it directly targets the pain receptors and provides relief. Repositioning the patient may help in some cases, but it is not the primary intervention for managing acute pain. Non-pharmacological interventions can be beneficial as adjuncts to pain management but might not provide immediate relief. Administering IV fluids is not a standard intervention for acute pain unless dehydration is contributing to the pain.

Correct Answer: B

Rationale: The correct answer is B: 'Heart rate of 88/min.' A heart rate of 88/min in a postoperative client can be an early sign of bleeding or other complications. It is essential to report this finding promptly to the healthcare provider for further evaluation and intervention. Choices A, C, and D are within normal ranges for a postoperative client and do not indicate immediate concern. A blood pressure of 118/76 mm Hg is normal, urinary output of 30 mL/hr may be adequate depending on the client's fluid status, and a hematocrit of 42% is within the acceptable range for a postoperative client. Therefore, they do not require immediate reporting.

Correct Answer: B

Rationale: The correct answer is B: Tachycardia. Tachycardia can indicate a hemolytic transfusion reaction, a severe and life-threatening complication of blood transfusion. The nurse should report tachycardia immediately to prevent further complications. Low back pain, flushed skin, and headache are also important to monitor during a blood transfusion, but they are not as indicative of a severe transfusion reaction as tachycardia.

Correct Answer: A

Rationale: Encouraging compliance through education is crucial in helping patients understand the importance of consistent medication use. By providing education, the patient can make informed decisions about their health and better manage their condition. Contacting the healthcare provider (choice B) may be necessary in some cases, but the initial approach should focus on patient education. Documenting the refusal (choice C) is important for legal and medical records but does not address the root cause of non-compliance. Exploring alternative treatment options (choice D) should come after efforts to educate and encourage compliance with the current medication regimen.