کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
3226538 | 1588171 | 2008 | 4 صفحه PDF | دانلود رایگان |
Supplementation with oxygen is fundamental in rescue and emergency medicine. However, transportation of oxygen cylinders or a rigid hyperbaric chamber requires large work forces. Also, oxygen in a cylinder may be completely consumed during a rescue action. The oxygen concentrators, which enrich the oxygen percentage of ambient air, may free rescuers from carrying heavy oxygen cylinders. In the present study, 2 types of oxygen concentrators were tested in a mountain hut located at an altitude of 3776 m. Oxygen concentration of the generated gas was 28.6% ± 0.8% with the first machine, which was powered by an internal battery. Arterial oxygen saturation of the volunteers inhaling through the machine increased from the original 79% ± 6% to 82% ± 6%. When the machine was used with a semi-closed circuit, the value increased further to 90% ± 3%. The second concentrator, which was powered by an external electric generator, outputted 90% ± 2% oxygen. Arterial oxygen saturation of the volunteers increased to 95% ± 1%. It is concluded that both types of oxygen concentrators were efficient at high altitude.
Journal: The American Journal of Emergency Medicine - Volume 26, Issue 9, November 2008, Pages 981–984