航天减压病易感性检测的研究

目的 为航天减压病易感性的检测提供有关参数。方法 ４３人进行低压舱实验。结果 安静状态下，高空减压病的发生与年龄、预吸氧时间及某些生理指标关系密切；在同样吸氧、减压条件下，年龄较大者（３０￣３６岁）比年轻者（１９￣２０岁）体脂高、血胆固醇高；实验前、后尿去甲肾上腺素增量大的减压病的发生率显著增高。在同样减压条件下，年龄相同、预吸氧时间长的，减压病的发生率明显减少或不发生。结论 初步拟定航天减压病易

Study on Testing Method of Susceptibility to Decompression Sickness in Aerospace

Objective To provid related parameters for astronauts. Method A study of susceptibility to decompression sickness was carried out in 43 subjects in a hypobaric chamber. Result Incidence of altitude decompression sickness under rest condition was closely related to age,time of oxygen prebreathing,gas bubble formation rates in the venous blood flow returned to heart and some other physiological indexes.Incidence of decompression sickness was significantly higher in subjets aged 3036 years than in those aged 1920 years under the same experimental conditions.In the older subjects bodyfat,blood cholesterole and noradrenaline in urine during experiment were significantly higher than those in the younger subjects. It also showed that among persons of the same ages,when prebreathing time was longer, the incidence of decompression sickness was significantly lower under the same experimental conditions. Conclusion It is desirable that the susceptibility to decompression in astronaut be tested with 1h oxygen prebreathing before exposure to the altitude of 10000 m for 30 min.