Nestled between the shadow of bustling downtown Los Angeles and the foothills of the majestic San Bernardino Mountain Range, Los Angeles County + University of Southern California Medical Center is strategically located at the confluence of Southern California's complex and busy freeway system. Easy freeway access and a mild annual climate combine to produce busy emergency room conditions and plenty of trauma surgery year round. The division of Acute Care Surgery is divided into three services (ACS A, ACS B, and ACS C). Each service is on call for a 24-hour period (0730-0730), every third day. The on-call ACS team admits to its service during their on-call period. The pre-call day is either spent in the ACS clinic or in the OR performing elective cases.
Trauma patients typicall arrive via LA City or County Fire Department paramedics or by private transportation. An extensive radio system coordinated by the Los Angeles County Emergency Medical Services (EMS) triages emergency patients to the nearest accepting medical facility capable of handling that particular medical emergency. Advance notice is given to the accepting facility. If a trauma patient meets the criteria for Trauma Team Activation (TTA), the ACS team, led by the ACS attending surgeon, is present in the ER before the patient arrives.