CHISAT-1实验中的连续高氧暴露

CONSECUTIVE HYPER-OXYGEN EXPOSURE DURING CHISAT-1 EXPERIMENT

在1988年中美联合CHISAT-1实验中,4名中国潜水员在5天的25m氮氧饱和期间进行了15批空气巡潜,其累积氧剂量达2442UPTD。连同空气减压时的氧暴露,实验的第6天累积氧剂量达3103UPTD,这时潜水员出现手指尖麻木感等轻微症状,但第7天以后即逐步消失,而整个实验氧暴露期间肺活量没有显著变化。

In the five-days' nitrox saturation habitating at a depth of 15 msw, four Chinese divers carried out 15 times of simulated air excursion in the experiment CHISAT-1, a Sino-American cooperation in 1988. The cumulative oxygen dose for the air excursions was 2442 UPTD. After that they were decompressed with air. The cumulative oxygen dose on the 6th day reached 3103 UPTD and the divers felt some of their fingertips numb.But the symptom gradually disappeared on the 7th day of the exposure. No significant changes were observed in their force of vital capacity during the experiment. The results suggested that the allowable cumulative oxygen doses for consecutive hyper-oxygen exposure recommended by Chen Bao-song et al. could be possibly closer to the reality than the others else.