The field of emergency medicine is defined as care for acutely ill and injured patients, both in the prehospital setting and in the emergency room. It is practiced as patient-demanded and continuously accessible care and is defined by the location of its practice rather than by an anatomical concern. Emergency medicine encompasses all medical specialties and physical systems. The commitment to rapid, prudent intervention under stressful and often chaotic conditions is of paramount importance to the critically ill patient. This branch of medicine is characterized by its complexity of problems, its twenty-four-hour availability to a variety of patients, and its effective and broad-based understanding of disease and injury. These features are used to orchestrate the response of multiple hands with the ultimate goal of referring the patient to ongoing care.
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