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Downloaded from https://academic.oup.com/milmed/article/106/6/483/4936346 by DeepDyve user on 14 August 2022 After the first demonstration at .18,000 25,000 they pair off and take turns at remov feet, and other similar ones at 25,600, the ing thei~ masks and converse with their chamber is "zoomed up" 10,000 feet higher partner until the evidence of hypoxia be to 35,000 feet. Here the instructor conducts comes apparent. Then the mask is restored . a demonstration of acute hypoxia, and here The entire simulated flight requires about again one of the student flight nurses volun an hour and a half, and in addition to the teers to serve as guinea-pig by removing her demonstrations conducted, the instructor oxygen mask. carries on a conversational lecture on chokes, Without oxygen at this dizzy height she bends, gas pains, emergency at high altitude begins to write on a pad as the other students and methods of equalizing pressure in the watch. Her pencil, first under perfect con inner ear. trol, begins within 30 seconds to wander in The current flight nurse class at the a senseless manner. But before she loses School of Aviation Medicine, which will consciousness, which would be any time complete its training on June 3, includes from 30 to 60 seconds, the oxygen supply 27 nurses and three male officers. Among is restored and she returns to normal. the nurses are two members of the Royal The nurses also walk around with portable Canadian Air Force. oxygen bottles at 35,000 feet, and back at A NEW lightweight x-ray machine, for panel cuts instruction time for student tech .rl. use in hospitals where skilled main- nicians and minimizes errors . After a 90-day test period, the unit will tenance personnel is usually not avail able, is undergoing rigid tests under the be returned to the manufacturer with a re supervision of Colonel Harold 1. Amory, port of findings and recommendations for Chief, Radiological Service, Walter Reed changes, if any are required. General Hospital, who helped develop the machine. The new unit, manufactured by a com mercial firm, is said to be capable of doing the work of larger conventional radiologic and fluoroscopic units. Dr. Scott W. Smith, Chief of Radiological Equipment Section, National Bureau of Standards, directed de velopment of the machine and Colonel Amory gave professional advice. Chief advantages lie in its lightweight sheet metal construction with a minimum of castings and a main transformer which uses gas at atmospheric pressure instead of oil insulation. This latter feature reduces the unit's weight one half and permits emergency patching with cellulose tape if the tank is punctured. The table is tilted by a hydraulic pump similar to that used on retractable landing gears. Simplified control * Release from the Office of the Surgeon General, U. S. Army, April 15, 1950.
Military Medicine – Oxford University Press
Published: Jun 1, 1950
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