Correct Answer: B

Rationale: The correct action for the nurse to take to assess for blanching in an area of hyperemia is to apply light pressure over the area. Blanching is the temporary whitening of the skin when pressure is applied and then released, indicating that the blood flow is returning to the area. Applying light pressure helps in determining if the hyperemic area blanches, ensuring that blood flow is adequate. Choices A, C, and D are incorrect because documenting findings, applying heat, or using cold compresses are not appropriate actions for assessing blanching in an area of hyperemia.

Correct Answer: B

Rationale: Administering antiemetics before meals is the best intervention to manage nausea and vomiting in clients receiving chemotherapy. This proactive approach helps control symptoms by preventing nausea from occurring, rather than waiting to treat it once symptoms have already started. Offering frequent, small meals (choice A) may worsen symptoms in some cases due to increased stomach activity. Encouraging a high-fat diet (choice C) can be difficult for nauseated clients and may not alleviate symptoms. Providing cold, carbonated beverages (choice D) could exacerbate nausea further due to the temperature and carbonation.

Correct Answer: A

Rationale: An increase in urine output is a positive sign that the client's hydration status is improving. It indicates that the kidneys are functioning well and that fluid therapy is effective. Increased urine output helps to eliminate excess fluid and waste products from the body. Choices B, C, and D are incorrect. Feeling more thirsty (choice B) is a sign of dehydration, not improvement. A decrease in blood pressure (choice C) and an increase in heart rate (choice D) are not typically indicative of improving fluid status during IV fluid therapy for dehydration.

Correct Answer: A

Rationale: The correct answer is to administer a 50% dextrose bolus intravenously. In unconscious clients with hypoglycemia, IV dextrose rapidly raises the blood glucose level. Glucagon would be a slower option and is typically used if IV access is unavailable. Oral glucose gel is not appropriate for an unconscious client as it requires swallowing and may cause aspiration. Rechecking the blood glucose level in 15 minutes delays immediate treatment and could lead to further deterioration.

Correct Answer: B

Rationale: A fever of 103 degrees Fahrenheit indicates that the infection is not under control despite antibiotic therapy. Fever is a common sign of ongoing infection or inadequate response to treatment. Nausea and vomiting, diffuse macular rash, and muscle tenderness are not typically indicative of the effectiveness of antibiotic therapy in treating infective endocarditis.