Acute confusional states (delirium) in the hospitalized elderly.
D000368:Aged; D003072:Cognition Disorders / Q000209:etiology*; D003221:Confusion / Q000209:etiology*; D003693:Delirium / Q000209:etiology*; D006760:Hospitalization; D006801:Humans; D011183:Postoperative Complications / Q000209:etiology