"[T]he ABC acronym used in traumas all over the world today arose from a particular light aircraft crash on a Nebraska prairie in the 1970s. James Styner, the American trauma surgeon who happened to be flying the plane, was horrified by the chaos, incompetence and dithering that nearly cost his four young children their lives in a tiny rural hospital. The acronym he developed is based on the principle that when someone is critically injured, time is of the essence. Airway, Breathing and Circulation problems must be fixed in that order, before moving on to the next thing, because they are most likely to kill the patient fastest. The genius of the acronym lies in its simplicity. It gives doctors, nurses and paramedics a scaffold to cling on to amid the shock and disarray of a major disaster, providing emergency treatment one logical step at a time."
January 1, 1970
https://en.wikiquote.org/wiki/Rachel_Clarke