Military anti-shock trousers (or Pneumatic Anti-Shock Garments) are medical devices used to treat severe blood loss.

Usually called "MAST", and sometimes "pneumatic anti-shock garments" (PASG), they were invented by Lt. Col. Burton Kaplan during the Vietnam War.

"Hemodynamic effects of military anti-shock trousers (MAST) in experimental cardiac tamponade".

Military anti-shock trousers (or Pneumatic Anti-Shock Garments) are medical devices used to treat severe blood loss.

In the 1970s the G-suit was modified into a half-suit which became known as MAST (Military anti-shock trousers) or PASG (Pneumatic Anti-Shock Garment).

The pre-hospital providers may use equipment unfamiliar to the average physician, but ED physicians must be expert in using (and safely removing) specialized equipment, since devices such as Military Anti-Shock Trousers ("MAST") and traction splints require special procedures.