The American journal of emergency medicine
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Multicenter Study Observational Study
Etiologies and delirium rates of elderly ED patients with acutely altered mental status: a multicenter prospective study.
Altered mental status (AMS) is a challenging diagnosis in older patients and has a large range of etiologies. The aim of this study was to investigate the nature of such etiologies for physicians to be better aware of AMS backgrounds and hence improve outcomes and mortality rates. ⋯ The most common causes of AMS were infection and neurological diseases. Delirium was associated with AMS in nearly half the patients. Moreover, the rates of hospitalization and mortality remained high.