A nurse is assisting in the care of a client in the intensive care unit (ICU). Drag words from the choices below to fill in each blank in the following sentence. The nurse should identify that the client's dropdownanddropdown can indicate the development of delirium.

Delirium is an acute, fluctuating change in cognition and attention commonly triggered by infection, hospitalization, and underlying medical conditions. The client demonstrates signs of sepsis (fever, hypotension, elevated WBC) and acute mental status changes including confusion, disorientation, and perceptual disturbances. Early recognition of cognitive changes such as altered orientation and hallucinations is essential for prompt intervention and prevention of complications. Rationale for correct choices: • Change in orientation: A change in orientation is a hallmark feature of delirium, especially when it develops acutely in hospitalized older adults. The client initially was oriented to person, place, and time but later became disoriented to time and place. This fluctuating confusion reflects acute brain dysfunction rather than a chronic cognitive disorder. Infections, such as postoperative wound infection, are a common precipitating factor for delirium. • Hallucinations: Hallucinations are a key feature of delirium and indicate severe disturbance in perception and cognition. The client’s report of spiders crawling on them represents a visual and tactile hallucination, which is classic for delirium. These symptoms often fluctuate and are triggered by infection, hypoxia, or metabolic imbalance. The presence of hallucinations signals worsening neurocognitive impairment requiring immediate intervention. Rationale for incorrect choices: • Past medical history: Although conditions such as Parkinson’s disease, hearing loss, and visual impairment increase the risk of delirium, past medical history itself is not an active indicator of delirium development. It represents predisposing risk factors rather than current clinical manifestations. Delirium is diagnosed based on acute changes in mental status, not historical conditions. Therefore, this is not a direct identifying sign of delirium. • Illusions: Illusions are misinterpretations of real external stimuli (e.g., mistaking a coat on a chair for a person). Although they can occur in delirium, they are not the specific finding described in this case. The client is reporting seeing and feeling spiders that are not present, which is more consistent with hallucinations rather than misinterpretation. Therefore, illusions are not the best descriptor for the client’s current symptoms.