Abdominal thrusts and upwards". They argue that this may be easier to perform with less concern about injury to ribcage or upper abdominal organs. Self-administered abdominal thrusts by study participants produced similar pressures to those generated by first aiders. The highest pressures were produced by participants performing an abdominal thrust onto the back of a chair (115 cmHO). 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
Jay McLean Jay McLean Jay McLean (1890 – November 14, 1957) was an American physician. He is most notable for his major contribution to the discovery of heparin. Born in San Francisco in 1890, he was the son of a physician, John T. McLean. Following education at Lowell High School, he entered the University of California at Berkeley in 1909, obtaining his Bachelor of Science degree in 1914. McLean entered Johns Hopkins School of Medicine in 1915 where he met and began work with physiologist William Henry Howell. In 1916, when McLean was a second-year medical student, he was investigating pro-coagulant compounds