Abdominal thrusts Abdominal thrusts Abdominal thrusts (also called the Heimlich maneuver or Heimlich manoeuvre, ) is a first aid procedure used to treat upper airway obstructions (or choking) by foreign objects. The term Heimlich maneuver is named after Dr. Henry Heimlich, who first described it in 1974. Performing abdominal thrusts involves a rescuer standing behind a patient and using his or her hands to exert pressure on the bottom of the diaphragm. This compresses the lungs and exerts pressure on any object lodged in the trachea, hopefully expelling it. Most modern protocols, including those of the American Heart Association, American Red Cross
What Is Life? his 1922 article "Variation due to Change in the Individual Gene" already laid out all the basic properties of the "heredity molecule" (then not yet known to be DNA) that Schrödinger was to re-derive in 1944 "from first principles" in "What is Life?" (including the "aperiodicity" of the molecule), properties which Muller specified and refined additionally in his 1929 article "The Gene As The Basis of Life" and during the 1930s. Moreover, H. J. Muller himself wrote in a 1960 letter to a journalist regarding "What Is Life?" that whatever the book got right about the "hereditary molecule" had already