American family physician
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Delirium is characterized by a sudden deterioration in cognitive function and an inability to sustain attention. It is a medical emergency that occurs in more than 20 percent of hospitalized elderly patients. Misdiagnosis is common and contributes to high morbidity and mortality. ⋯ Effective management requires prompt treatment of the underlying pathology and maintenance of a supportive environment. It is often necessary to control agitation and prevent the complications of immobility in elderly patients with delirium. Although the long-term prognosis is guarded in elderly patients with delirium, sound geriatric care and a high index of suspicion can minimize the impact of delirium.