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
Henry Dewar (physician) Malte-Brun. He wrote also for the "Encyclopædia Britannica", and the "Transactions" of the Royal Society of Edinburgh. He married Helen Margaret Spence (1800-1870), an American from Philadelphia, in May 1809. They had six children including James Dewar, Donald William Dewar (1825-1851), Dr Henry Andrew Dewar (1812-1861), Mary Dewar (1810-1869) (who married Dr Gilman Kimball). Henry Dewar (physician) Henry Dewar of Lassodie MD FRSE (1771–1823), originally Henry Frazer or Fraser, was a Scottish minister turned physician, known as a writer. His father was John Frazer, minister of the Associate Church at Auchtermuchty, in Fife, Scotland; his mother was Margaret Erskine. He