An emergency department, also known as an accident and emergency department, emergency room (ER) or casualty department, is a medical Treatment facility specialising in emergency Treatment of patients who arrive without a 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 centres. Due to the unplanned nature of patient attendance, the department must provide initial Treatment for a wide range of Illnesses and injuries, some of which may be life-threatening and require immediate medical attention.
A designated section of a Hospital where people who are severely injured in accidents or suddenly become ill and need urgent Treatment are assessed and treated.