Military anti-shock trousers
（重定向自Pneumatic antishock garment）
Military anti-shock trousers (or pneumatic anti-shock garments) are medical devices used to treat severe blood loss. They are also indicated for the stabilization of unstable pelvic fractures in the field prior to transport.
Usually called "MAST", and sometimes "pneumatic anti-shock garments" (PASG), they were invented by Lt. Col. Burton Kaplan during the Vietnam War. MAST look like a pair of trousers. They are opened and placed around the legs and pelvis of the patient. Each leg and the pelvic section may then be inflated, applying pressure to the lower half of the body The trousers can be used with sager traction splints and dressings already in place.