论文部分内容阅读
目的 探讨海上大深度氦氧饱和潜水对人体肺功能的影响。方法 8名潜水员 ,进行海上氦氧 15 0 m饱和 - 182 m巡回潜水 ,测定潜水员进舱前、加压、饱和暴露、出舱后立即和出舱后 2 4 h的肺通气功能。结果 高气压暴露阶段的肺功能变化显示 ,除 FVC在各阶段的值差异无显著性外 ,其他各指标与深度呈负相关。 FEV1 .0 、FEV1 % 在 15 0 m饱和停留阶段与基础值相比有显著性降低 (P<0 .0 5 ,<0 .0 1) ;MMF在 70 ,110 ,15 0 m饱和停留阶段与基础值比较有显著性降低 (P<0 .0 5 ,<0 .0 1,<0 .0 1) ;PEFR在加压 110 m和 15 0 m饱和停留阶段与基础值和 30 m测定值相比有显著性降低 (P<0 .0 1,<0 .0 5 ,<0 .0 1) ;在 15 0 m饱和停留阶段 ,FEF2 5% 与基础值、30 m测定值比较都显著降低 (P <0 .0 1,<0 .0 5 ) ;FEF50 % 与基础值、30 ,70和 110 m测定值比较都显著降低 (P<0 .0 1,<0 .0 5 ,<0 .0 5 ,<0 .0 5 ) ;FEF75% 与基础值、30和 70 m测定值比较都显著降低 (P<0 .0 1,<0 .0 5 ,<0 .0 5 )。在 15 0 m饱和停留阶段 ,FEF2 5% 、FEF50 % 、FEF75% 较基础值减低的幅度分别为 2 5 .5 1% ,4 2 .35 % ,5 6 .84 % ,表现出肺容量越低对应的流量变化越明显。出舱后的肺功能参数均在正常范围内波动。出舱后立即测得的 MMF较基?
Objective To investigate the effect of deep deep sea helium oxygen saturation diving on lung function of human. Methods Eight divers were conducted a 150 m saturation and 182 m roving dive at sea. The divers were exposed to pressurized, saturated exposure immediately after exiting and 24 h after exiting. Results The changes of lung function during exposure to high pressure showed that there was a negative correlation between the other indexes and the depth except for the difference in the values of FVC in all stages. FEV1 .0 and FEV1% decreased significantly at 15 0 m saturation phase compared with the baseline values (P <0.05, <0.01) (P <0.05, <0.01, <0.01). Compared with the baseline value and 30 m measured values of PEFR in the saturated phase of 110 m and 150 m of pressurization (P <0.01, <0.05, <0.01). In the saturated phase of 150 m, FEF2 5% was significantly lower than the baseline and 30 m P <0. 01, <0. 05); FEF50% was significantly lower than the baseline values at 30, 70 and 110 m (P <0.01, <0.05, <0. 0 5, <0. 05). The FEF75% was significantly lower than the baseline values at 30 and 70 m (P <0.01, <0.05, <0.05). During the saturated stay at 15 0 m, the reduction of FEF2 5%, FEF50% and FEF75% from the baseline values were respectively 25.51%, 42.35% and 56.84%, showing a lower lung capacity Corresponding to the more obvious changes in traffic. Pulmonary function parameters after the cabin were within the normal range of fluctuations. Measured immediately after the MMF base more?