Correct Answer: B

Rationale: The correct instruction the nurse should include is to ensure the cane has a rubber tip. This is important as it prevents slipping and ensures safety while walking. Choice A is incorrect because the cane should be held on the stronger side to provide better support. Choice C is incorrect as the cane should be used on the stronger, not the dominant, side for stability. Choice D is incorrect because a cane can be used for support in various situations, not just on stairs.

Correct Answer: B

Rationale: When admitting a client with meningococcal meningitis, the nurse's priority should be to place the client on droplet precautions. This is crucial to prevent the spread of the infection to others. Administering antibiotics, performing a lumbar puncture, and initiating seizure precautions are important interventions but should come after implementing droplet precautions to ensure the safety of both the client and others.

Correct Answer: B

Rationale: The correct intervention for a client at risk for pressure injuries is to use a special mattress. Special mattresses help reduce the risk of pressure injuries by redistributing pressure on bony areas, thus preventing tissue damage. Keeping the client in one position (choice A) can actually increase the risk of pressure injuries due to prolonged pressure on specific areas. Turning the client every 4 hours (choice C) is important for preventing pressure injuries, but using a special mattress is a more effective intervention. Providing extra pillows for positioning (choice D) may offer some comfort but does not address the primary intervention of pressure redistribution that a special mattress provides.

Correct Answer: D

Rationale: The correct answer is D: Lowered immune function. Older adults often experience a decline in immune function as they age, making them more vulnerable to infections. This weakened immune system can result in increased susceptibility to various pathogens. Choice A, 'Improved nutritional status,' is incorrect because good nutrition can actually help support the immune system. Choice B, 'Increased mobility,' is not directly related to an increased risk of infections. Choice C, 'Chronic conditions,' while they can contribute to a weakened immune system, do not directly address the primary risk factor for infections in older adults.

Correct Answer: B

Rationale: The correct answer is B: 'Use a special mattress for the client.' Using a special mattress reduces pressure on bony prominences and helps prevent pressure injuries. Repositioning the client every 4 hours (choice A) is important but using a special mattress is more effective. Keeping the client on bedrest (choice C) can increase the risk of pressure injuries due to prolonged immobility. Encouraging the client to remain in one position (choice D) is incorrect as it can lead to pressure injuries by exerting pressure on the same areas for an extended period.