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The emergency department is often a frontline venue for the delivery of emergent medical care.

An emergency department (ED), also known as an accident & emergency department (A&E), emergency room (ER) or casualty department, is a medical treatment facility specializing in emergency medicine, the acute care of patients who present without prior appointment; either by their own means or by that of an ambulance. The emergency department is usually found in a hospital or other primary care center.

Due to the unplanned nature of patient attendance, the department must provide initial treatment for a broad spectrum of illnesses and injuries, some of which may be life-threatening and require immediate attention. In some countries, emergency departments have become important entry points for those without other means of access to medical care.

The emergency departments of most hospitals operate 24 hours a day, although staffing levels may be varied in an attempt to reflect patient volume.


Emergency department sections
Intro  History  Department operation  Nomenclature in English  Signage  United States  United Kingdom  Critical conditions handled  Special facilities, training, and equipment  Non-emergency use  Overcrowding  Emergency departments in the military  Violence against health care workers  See also  Notes  References  External links  

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{{#invoke:Hatnote|hatnote}}
The emergency department is often a frontline venue for the delivery of emergent medical care.

An emergency department (ED), also known as an accident & emergency department (A&E), emergency room (ER) or casualty department, is a medical treatment facility specializing in emergency medicine, the acute care of patients who present without prior appointment; either by their own means or by that of an ambulance. The emergency department is usually found in a hospital or other primary care center.

Due to the unplanned nature of patient attendance, the department must provide initial treatment for a broad spectrum of illnesses and injuries, some of which may be life-threatening and require immediate attention. In some countries, emergency departments have become important entry points for those without other means of access to medical care.

The emergency departments of most hospitals operate 24 hours a day, although staffing levels may be varied in an attempt to reflect patient volume.


Emergency department sections
Intro  History  Department operation  Nomenclature in English  Signage  United States  United Kingdom  Critical conditions handled  Special facilities, training, and equipment  Non-emergency use  Overcrowding  Emergency departments in the military  Violence against health care workers  See also  Notes  References  External links  

PREVIOUS: IntroNEXT: History
<<>>