The main patient area inside the Mobile Medical Unit operated in Belle Chasse, Louisiana An<unk>  <unk> , also known as an accident and<unk>  (A&E), emergency room (ER), emergency ward (EW) 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<unk>  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,<unk> s have become important entry points for those without other means of access to medical care. The<unk> s of most hospitals operate 24 hours a day, although staffing levels may be varied in an attempt to reflect patient volume.
Emergency department
Emergency service
Outpatient department
Emergency medicine
Outline of cardiology
Hospital
Operating theater
Hospital NEO