Correct Answer: C

Rationale: The correct intervention for a client at risk for pressure ulcers is to turn and reposition the client every 2 hours. This helps relieve pressure on bony prominences, improving circulation and reducing the risk of pressure ulcer development. Applying heat to the affected area (Choice A) can increase the risk of skin breakdown. Placing the client in a prone position (Choice B) can also increase pressure on certain areas, leading to pressure ulcers. Providing the client with a bedpan every 4 hours (Choice D) is not directly related to preventing pressure ulcers.

Correct Answer: B

Rationale: When assessing a client with a newly applied cast, the nurse should expect a capillary refill of approximately 2 seconds, as this indicates adequate circulation. A capillary refill longer than 3 seconds suggests impaired circulation, which is abnormal. Therefore, a capillary refill of 5 seconds is the finding the nurse should expect. Pitting edema and shortness of breath are not typically directly related to a newly applied cast and should not be expected findings in this scenario.

Correct Answer: B

Rationale: The correct answer is B: Limit phosphorus and potassium intake. In chronic kidney disease, the kidneys are unable to effectively filter these minerals from the blood, leading to their accumulation and potential complications. Restricting phosphorus and potassium intake is crucial in managing the progression of the disease. Choice A is incorrect as increasing potassium-rich foods can worsen the condition. Choice C is also incorrect as excessive protein intake can put more strain on the kidneys. Choice D is not the priority; rather, fluid intake should be monitored based on individual needs and stage of kidney disease.

Correct Answer: B

Rationale: The correct teaching point for a client with left-leg weakness learning to use a cane is to maintain two points of support on the floor at all times. This ensures better stability and support for the client while walking. Choice A is incorrect because the cane should be used on the stronger side to support the weaker leg. Choice C is incorrect as advancing the cane too far with each step may compromise balance. Choice D is incorrect because advancing the cane and the strong leg together may not provide adequate support for the weaker leg.

Correct Answer: A

Rationale: The correct answer is A: Administer bronchodilators and monitor oxygen levels. Asthma management involves using bronchodilators to help open the airways and improve breathing. Monitoring oxygen levels is essential to ensure the patient is getting enough oxygen. Choice B, encouraging deep breathing exercises, can be helpful for some respiratory conditions but is not a key intervention for managing an acute asthma attack. Choice C, providing corticosteroids and monitoring for respiratory distress, is important for long-term asthma management and severe exacerbations but is not the immediate key intervention during an acute attack. Choice D, providing antihistamines and monitoring blood pressure, is not typically indicated for asthma management as asthma is primarily an airway disease, not a histamine-mediated condition.