Emergency nursing is a specialty within the field of professional nursing focusing on the care of patients with medical emergencies, that is, those who require prompt medical attention to avoid long-term disability or death. Emergency nurses are most frequently employed in hospital emergency departments (EDs), although they may also work in urgent care centers, sports arenas, and on medical transport aircraft and ground ambulances. It is a demanding job and can be unpredictable. Emergency nurses need to have basic knowledge of most specialty areas, to be able to work under pressure, communicate effectively with many types of patients, collaborate with a variety of health care providers and prioritize the tasks that must be performed.