[General anesthesia in major cancer surgery of the upper respiratory and digestive tracts. Significance of a fentanyl-thiamine combination].

Synaptanalgesia uses a polysynaptic inhibitor: thiamine and a powerful analgesic drug with or without nitrous oxide. This type of vigil or sub-vigil anesthesia used in major cancer surgery of the upper digestive tract and the airway, permits one to obtain: -efficacious protection of the autonomic nervous system, in spite of manipulations of highly reflexogenic areas, -a marked reduction in bleeding. The technique used is derived from that of other authors: DE CASTRO, MUNDELEER, VALENI, MAZZONI, GASPARETTO, adapting it to this type of surgery and attempting to simplify it.