Mrs. Johnson, who has a diagnosis of dementia, has been admitted for acute confusion and agitation. What is the nurse's priority assessment?

Choice A reason: Sleep patterns impact dementia but aren’t the priority for acute confusion. Disrupted sleep may exacerbate agitation via circadian rhythm disturbances, increasing cortisol. Scientifically, while sleep affects cognitive function, infection is a more urgent cause of acute changes, as it directly triggers neuroinflammatory responses, worsening confusion. Choice B reason: Monitoring blood pressure is relevant for dementia patients with cardiovascular risks but not the priority for acute confusion. Hypertension may contribute to cognitive decline long-term. Scientifically, acute changes are more likely driven by infection or metabolic issues, which directly cause neuroinflammation or delirium, requiring immediate assessment. Choice C reason: Nutritional status affects dementia progression but isn’t the primary cause of acute confusion. Malnutrition may exacerbate cognitive decline via metabolic deficiencies. Scientifically, acute agitation is more likely triggered by infection or medication, causing rapid neuroinflammatory changes, making nutritional assessment secondary to urgent causes like infection. Choice D reason: Assessing for infection is critical, as it’s a common cause of acute confusion in dementia. Infections like UTIs trigger neuroinflammation, increasing cytokines and altering brain function. Scientifically, this causes delirium, worsening agitation and confusion, requiring immediate identification to treat the underlying cause and stabilize cognitive function.