Emergency medicine, also known as accident and emergency medicine, is the medical specialty concerned with caring for undifferentiated patients with illnesses or injuries requiring immediate medical attention. In their role as first-line providers, emergency physicians are responsible for initiating resuscitation and stabilization, starting investigations and interventions to diagnose and treat illnesses in the acute phase, coordinating care with specialists, and determining disposition regarding patients' need for hospital admission, observation, or discharge. Emergency Medicine is a primary, or first-contact point of care for patients requiring the use of the health care system. Specialists in Emergency Medicine are required to possess specialist skills in acute illness diagnosis and resuscitation. Emergency physician are responsible for providing immediate recognition, evaluation, care, stabilization, to \adult and pediatric patients in response to acute illness and injury.