Correct Answer: C

Rationale: Choice C is the correct answer because it demonstrates that the client understands the importance of communicating with the nurse if the pain persists while using the PCA device. This is crucial as it ensures proper pain management and monitoring. Choices A and B are incorrect because delaying the use of the device until necessary or being cautious about pushing the button too much do not necessarily reflect understanding of using the PCA device effectively. Choice D is incorrect as having someone else, like an adult child, push the dose button goes against the principle of the client self-administering the medication through the PCA device.

Correct Answer: D

Rationale: The most crucial action for the nurse to take when caring for a client in restraints is to release the restraints every 2 hours for repositioning. This practice helps prevent complications such as pressure ulcers and impaired circulation by ensuring adequate blood flow and preventing skin breakdown. Checking the client's circulation every hour (Choice A) is important, but releasing the restraints for repositioning takes precedence to prevent serious complications. While documenting the reason for restraints (Choice B) is essential for legal and documentation purposes, it is not as critical as providing necessary care to the client's physical well-being. Providing range-of-motion exercises (Choice C) is beneficial for maintaining mobility but may not address the immediate risks associated with prolonged restraint use.

Correct Answer: A

Rationale: The correct technique for logrolling involves at least three to four people to ensure the safety and proper alignment of the patient's spine. Logrolling requires coordinated effort from multiple individuals to prevent twisting or bending of the spine, hence option A is correct. Option B is incorrect as patients with spinal cord injuries should not be instructed to reach for the opposite side rail due to the risk of causing harm. Option C is incorrect as moving the bottom part of the patient's torso first could lead to spinal misalignment. Option D is incorrect as pillows should be used for support and comfort after the patient has been successfully turned, not before.

Correct Answer: C

Rationale: In a client with chronic kidney disease, an elevated serum potassium level (hyperkalemia) is the most concerning finding. Hyperkalemia can lead to life-threatening cardiac dysrhythmias due to its effect on the electrical conduction system of the heart. Monitoring and managing serum potassium levels are crucial in patients with chronic kidney disease to prevent serious complications. While elevated serum creatinine (Choice A) and Blood Urea Nitrogen (BUN) levels (Choice B) indicate impaired kidney function, hyperkalemia poses an immediate risk of cardiac complications. Hemoglobin levels (Choice D) are typically lower in chronic kidney disease due to decreased erythropoietin production, but they do not present an immediate life-threatening risk like hyperkalemia.

Correct Answer: B

Rationale: Using a sterile technique throughout the procedure is essential to prevent infection when inserting an IV catheter. This includes maintaining aseptic conditions, using sterile equipment, and following proper hand hygiene practices. Choice A is incorrect because threading the catheter up to the hub does not specifically address infection prevention. Choice C is incorrect as cleaning the insertion site with alcohol only may not provide adequate disinfection, as it is essential to use an antiseptic solution to reduce microbial load. Choice D is incorrect as wearing gloves alone is not sufficient protection against infection; a mask should also be worn to prevent the spread of microorganisms through respiratory secretions.