Back Schlaftherapie German Syväuniterapia Finnish Cure de sommeil French Sonoterapia Portuguese Liệu pháp ngủ sâu Vietnamese
Deep sleep therapy (DST), also called prolonged sleep treatment or continuous narcosis, is a discredited form of ostensibly psychiatric treatment in which drugs are used to keep patients unconscious for a period of days or weeks. The controversial practice led to the death of 25 patients in Chelmsford Private Hospital in New South Wales, Australia, from the early 1960s to late 1970s.