The Asistencia Pública was founded on August 7, 1911. It was conceived as a public hospital focused on emergency medicine. Its first location was a building acquired from the Franciscan community located at N° 85 San Francisco street, at the intersection with San Carlos street (later renamed as Alonso Ovalle). A new building was inaugurated on December 15, 1967 and its infrastructure allowed the development of various services and units that modernized, expanded and improved emergency patient care. Recently, a new facility was incorporated, called Torre Valech, inaugurated in February 2019, housing modern facilities for the emergency service, the surgical pavilions and the intensive care unit. The year 1936 marked a milestone for the Asistencia Publica Anesthesiology, due to the work of Ernesto Frías, MD, specialist trained in United States and Argentina, who organized for the first time an annual anesthesia course, working on an Ad Honorem basis. Nevertheless, the true founder of the Anesthesiology Service and Intensive Care Unit of the José Joaquín Aguirre Hospital, was Dr. Max Arriagada Loyola. He was also a pioneer in allowing medical students to do the work of technical assistants in the specialty, during their undergraduate studies. During the eighties, the Asistencia Publica's Anesthesiology Service added new specialists who were filling the available positions both, during the daytime and on call hours. Incorporation of new technology also allowed to offer more complex and safer anesthesia procedures. Teaching has been a fundamental part of the activities of the service since its creation. First with of Dr. Arriagada's disciples, then, with the Ministerial Training Program for Anesthesiologists which in 1999 became the Postgraduate Program in Anesthesiology and Resuscitation of the Universidad de Santiago de Chile. In 2013 the program was accredited for the first time.