Abstract: An apparatus for the treatment of a victim suffering from shock includes a single piece, double-walled panel of flexible material forming a chamber adapted to receive and contain a pressurized gas. The panel has a pair of lower sections adapted to surround the legs of the victim, and an upper section adapted to surround the abdomen of the victim in the region below the victim's rib cage. When the panel is inflated by the introduction of pressurized gas into the chamber, a pressure is exerted on the legs and abdomen of the victim, thereby decreasing the volume of venous blood pooled therein and producing an increased venous return to the victim's heart. This external pressure also provides immobilization for the victim and affords to him protection and comfort while being transported from an accident site to a medical facility.