A patient transport system in emergency vehicles (200) comprising: a loading aisle (206) that provides access to an interior of an emergency vehicle (200)； one or more rails (210) coupled to a floor (202) of the emergency vehicle (200), a roof (204) of the emergency vehicle (200), a wall (208) of the emergency vehicle (200) or combinations thereof wherein, a travel path (212) is delimited by the one or more lanes (210)； a chair (100) slidably coupled with the one or more rails (210), and vertically positioned between the floor (202) and the ceiling (204) where: the chair (100) is locked in one or more positions of mounting； and the one or more mounting positions are selected from a group consisting of an airway care position (225), an extended airway care position (226), a regulatory care position (227), a response position (228), a patient care position (229), a lower care position (231) and a patient loading position (230), characterized in that the one or more rails (210) comprise a rail roof (214) coupled to the ceiling (204) and a floor rail (216) coupled to the floor (202)； and the chair (100) comprises: one or more roof translation members (110) slidably coupled with the roof rail (214)； one or more floor translation members (120) slidably coupled with the floor rail (216)； a vertical member (130) extending between the one or more roof translation members (110) and the one or more floor translation members (120) and comprising an upper frame joint (132)； and a seat (131) comprising an upper portion (102), a lower portion (104), an upper chair joint (136) adjacent to the upper portion (102) and rotatably joined to the upper frame joint ( 132) of the vertical member (130) by an upper arm (134) between them, and a lower chair joint (138) adjacent to the lower portion (104) and rotatably joined to the vertical member (130) by a lower arm (140) between them.Un sistema de transporte de pacientes en vehículos de emergencia (200) que comprende: un pasillo de carga (2
