In March 1966, the first clinical Trauma Treatment Unit was developed at the Cook County Hospital, Chicago. This large county hospital was treating 7,000 or more injured patients annually, and it was readily apparent that resuscitation and care of the critically injured patient was not optimal on the busy surgical services. Specialized trauma care facilities had been used successfully in Europe, although in a different form; this unit functioned equally well in the milieu of the metropolitan municipal hospital.
After several years of successful operation, the state of Illinois, through its Department of Public Health, initiated the Illinois Statewide Trauma Program, a statewide extension of the trauma unit concept. This system was developed by Boyd et al1 in response to a specific need and with the full cooperation of state government in an effort to improve patient care (initially in trauma). The backbone of this unique program was the
BAKER RJ. Emergency Medical Services Categorization and RegionalizationAn Accomplished Fact. Arch Surg. 1978;113(10):1133-1134. doi:10.1001/archsurg.1978.01370220019001