A nurse is assessing a client who was brought in by a family member. The family member reports the client has had a change in behavior over the past 2 days. Which of the following findings should the nurse identify as an indication that the client has delirium?

Introduction: Delirium is a transient disturbance in consciousness characterized by an acute onset and fluctuating course. It often results from underlying physiological triggers, such as infection or toxicity, causing cognitive fragmentation and significant alterations in psychomotor activity, which can manifest as either hyperactive or hypoactive behavioral states. A. Agitation is a common manifestation of hyperactive delirium, characterized by restlessness, increased psychomotor activity, and emotional lability. Because delirium has an acute onset over hours or days, sudden agitation in a client with a recent change in behavior is a cardinal sign that necessitates a thorough medical workup for underlying causes. B. Catatonia involves a state of neurogenic motor immobility and behavioral abnormality. While it can occur in various psychiatric and medical conditions, it is not the primary hallmark of an acute 2 day change in behavior suggestive of delirium. Catatonia is more frequently associated with mood disorders or schizophrenia rather than acute metabolic encephalopathy. C. Echopraxia is the involuntary imitation of another person's movements and is typically associated with schizophrenia or other chronic psychotic disorders. While a delirious client may be confused, the specific purposeless mimicking of movements is not a standard diagnostic criterion for delirium, which focuses more on attention and orientation deficits. D. Apathy is a lack of interest or emotion, often seen in the negative symptoms of schizophrenia or the late stages of dementia. While hypoactive delirium can involve decreased activity, agitation is a much more specific and common indicator of the acute behavioral shift described by family members in cases of delirium.