designed to help correct or ameliorate the discomfort of disorders of the spine and joints: orthopaedic mattresses Collins English Dictionary - Complete & Unabridged 2012 Digital Edition Â© William Collins Sons & Co. Ltd. 1979, 1986 Â© HarperCollins
Definition of Immelmann. : a maneuver in which an airplane reverses direction by executing half of a loop upwards followed by half of a roll âcalled also Immelmann turn.
Choking (Heimlich Maneuver) ACEP recommends that the Heimlich Maneuver be employed only when a person is choking and his or her life is endangered by a windpipe obstruction. Choking is signaled by an inability to speak, cough or breathe, and may result in a loss of consciousness and death. Avoid using excessive force in employing the Heimlich Maneuver to avoid injury to the ribs or internal organs. Given the potentially life-or-death nature of the situation, use your best judgment.