Correct Answer: B

Rationale: The correct answer is to investigate the client's recent medication changes. In a client with dementia who frequently becomes agitated, medication changes can often be a significant factor contributing to their behavior. Checking recent medication changes can help identify if any specific medication is causing or exacerbating the agitation. Choice A about fluid and electrolyte balance is less likely to be the priority unless there are specific indications in the medical record. Choice C, investigating recent changes in cognitive functioning, may be important but addressing the agitation first is a more immediate concern. Choice D, investigating the client's psychosocial environment, is also important but may not directly address the immediate cause of the agitation as medication changes could.

Correct Answer: A

Rationale: The correct answer is A: Clean the perineal area with soap and water. This step is essential in preventing infection and promoting hygiene. Using antiseptic wipes (choice B) is not a standard practice for perineal care; soap and water are preferred. While patting the area dry after cleaning (choice C) is important, the initial step of cleaning with soap and water is crucial. Using gloves (choice D) is a good practice to prevent the spread of infection, but it is not the initial step in providing perineal care.

Correct Answer: B

Rationale: Constant bubbling in the water seal chamber indicates an air leak, which should be reported to the provider. This finding suggests that the chest tube system is not functioning properly, leading to potential complications such as pneumothorax. Drainage of 75 mL in the first hour after surgery is within the expected range for a chest tube. Tidaling in the water seal chamber is a normal fluctuation and indicates proper functioning of the system. Client report of pain at the chest tube insertion site is expected after surgery and can be managed with appropriate pain management measures.

Correct Answer: A

Rationale: In a client with dementia, addressing restlessness and agitation is a priority because these symptoms can exacerbate dementia and lead to further complications. Restlessness and agitation can indicate underlying issues such as pain, discomfort, or unmet needs, which should be promptly assessed and managed to improve the client's quality of life. Decreased respiratory rate, wandering during the night, and incontinence are important to address but do not pose immediate risks to the client's well-being compared to the potential effects of unmanaged restlessness and agitation in dementia.

Correct Answer: A

Rationale: The correct nursing intervention for a patient with fluid volume overload is to restrict fluid intake. This helps to prevent further fluid accumulation in the body. Monitoring intake and output (choice B) is important to assess the patient's fluid balance but is not a direct intervention to address fluid volume overload. Administering diuretics as prescribed (choice C) is a medical intervention that may be ordered by a healthcare provider but should not be assumed as a nursing intervention without a prescription. Elevating the head of the bed (choice D) is a measure commonly used for patients with respiratory distress or to prevent aspiration but is not a direct intervention for fluid volume overload.