Correct Answer: B

Rationale: The correct answer is B: Ensure the blood type is compatible with the client. This is the most crucial step in preparing for a blood transfusion to prevent severe transfusion reactions. Checking the client for a fever (Choice A) is important but not the most critical step. Administering blood via IV push (Choice C) is incorrect as blood transfusions are usually administered as a slow drip. Warming the blood to body temperature (Choice D) is not a standard practice and can lead to hemolysis, making it an incorrect choice.

Correct Answer: C

Rationale: When signs of phlebitis are observed in a client receiving IV fluids, the appropriate action is to apply a warm compress. This helps to reduce discomfort and swelling at the site of the IV insertion. Applying a cold compress may not be as effective in this case and could potentially worsen the condition. While notifying the physician is important, providing immediate comfort to the client through a warm compress is the initial recommended intervention. Administering anti-inflammatory medication should only be done under the direction of a healthcare provider after assessment and evaluation of the client's condition.

Correct Answer: A

Rationale: Assessing mobility should be the nurse's priority as it ensures the client's safety and helps in developing an appropriate care plan. By evaluating the client's ability to move after the knee arthroplasty, the nurse can identify any immediate issues or complications that need to be addressed promptly. Monitoring vital signs, providing pain relief, and reinforcing discharge teaching are important aspects of care but assessing mobility takes precedence in ensuring the client's immediate well-being and identifying any potential risks.

Correct Answer: C

Rationale: Placing a pillow between the client's legs is beneficial after hip replacement surgery to maintain proper alignment and prevent dislocation of the prosthesis. This position helps keep the hip in a neutral position, reducing the risk of dislocation. Encouraging the client to bend at the waist (Choice A) can increase the risk of hip dislocation. Maintaining the client in a high-Fowler's position (Choice B) and avoiding placing a pillow under the client's knees (Choice D) do not directly address the need to maintain proper alignment of the hip joint to prevent dislocation.

Correct Answer: D

Rationale: The correct action the nurse should take when administering enoxaparin subcutaneously is to pinch the skin between the thumb and forefinger. Pinching the skin helps to lift the subcutaneous tissue, reducing the risk of injecting into the muscle. Choices A, B, and C are incorrect. Choice A is not relevant as the injection site for enoxaparin is typically in the abdomen or thigh, not the arm. Choice B is incorrect as pulling the skin laterally is not a recommended technique for subcutaneous injections. Choice C is also incorrect as massaging the injection site after administration can increase the risk of bleeding or bruising.