Correct Answer: B

Rationale: An elevated temperature of 38.5°C (101.3°F) is indicative of infection postoperatively. Fever is a common sign of infection, and temperatures above the normal range should raise suspicion. The other vital signs (blood pressure, heart rate) may be within an acceptable range, and some drainage at the surgical site can be expected postoperatively. However, the elevated temperature is a more specific indicator of a potential infection that requires immediate attention.

Correct Answer: A

Rationale: The correct action for the nurse to take is to flush the tube with 30 mL of sterile water before each feeding. This helps maintain tube patency and prevents clogs. Choice B is incorrect because enteral feedings should be administered using a gravity drip method or a pump, not through a large-bore syringe. Choice C is incorrect because the head of the bed should be elevated to at least 30 degrees to reduce the risk of aspiration. Choice D is incorrect because the feeding bag should be replaced every 24 hours to prevent bacterial contamination.

Correct Answer: D

Rationale: The correct answer is D: 'Use sterile technique when changing the central line dressing.' When caring for a client receiving TPN, it is crucial to maintain aseptic technique to prevent infections. Changing the central line dressing with sterile technique helps reduce the risk of introducing pathogens into the client's system. Choices A, B, and C are incorrect because changing the TPN tubing every 72 hours, monitoring blood glucose, and monitoring urine output are important aspects of care but are not directly related to preventing infection in clients receiving TPN.

Correct Answer: D

Rationale: Correct Answer: When administering intramuscular injections like ceftriaxone, it is essential to aspirate for blood return before injecting the medication to ensure that the needle is not in a blood vessel. Choices A and B are incorrect because ceftriaxone is typically administered using a syringe appropriate for IM injections (not a tuberculin syringe) and injected at a 90-degree angle rather than 45 degrees. Choice C is incorrect because the dorsogluteal site is no longer recommended for IM injections due to potential injury to the sciatic nerve and other structures.

Correct Answer: B

Rationale: An INR of 1.2 is below the therapeutic range for a client on warfarin, indicating inadequate anticoagulation. Therefore, the client would require an increase in the dose of warfarin to achieve the desired therapeutic effect. Choices A, C, and D are not indicative of the need for a dose increase in warfarin therapy. PT of 28 seconds is within the therapeutic range, aPTT of 40 seconds is also within the normal range, and fibrinogen level of 350 mg/dL does not provide information about the anticoagulant effect of warfarin.