Assignment task: A 72-year-old male patient was admitted to surgical intensive care after having vascular surgery. He was stable the first day, but on day two his daughter asked the nurse, "How long has he been confused? He wasn't like this yesterday or before his surgery." His vital signs are stable, except for a temperature of 100.2°F (37.9°C). This morning, his speech is slow and difficult to understand, and he repeatedly asks his daughter about the "birds flying around" in his room. His daughter tells the nurse that he is normally quiet and has some trouble remembering recent events, but that he's never been "confused like this." Orders for a complete blood count, renal function studies, electrolytes, and urine and blood cultures are obtained to investigate potential causes of delirium.
Upon assessment, which clinical manifestations will the nurse expect to see that support a possible diagnosis of delirium? Select all that apply.