摘要
目的研究不同水平高+Gz暴露后对人体肺功能的后效应。方法 95名现役男性歼击机飞行员,分别接受+7 Gz和+9 Gz离心机检查,于+G;暴露前1 d和暴露后12-65 min内测定肺容量、肺通气功能和弥散功能指标。结果 +7Gz暴露后,飞行员肺弥散功能减退和轻度小气道功能异常,+9 Gz暴露后程度加重,并出现肺活量降低。但+7 Gz和+9Gz之间,各项指标无明显差异。结论高G暴露可导致小气道功能和弥散功能减低的后效应,其持续时间和对飞行员肺功能有无长期影响有待进一步研究。
Objective To explore the after effects of high ＋Gz exposure on lung function in humans. Methods Ninety-five fighter pilots served as subjects. Twenty-nine of them underwent ＋7 Gz centrifuge testing with anti-G suit and L-1 maneuver,40 of them underwent ＋ 9 G. centrifuge testing with PBG in addition and 26 of them both ＋7 Gz and ＋9 Gz testing. The lung volume, the index of ventilation and diffusion function were measured one day before centrifuge testing and 12 - 65 minutes after testing. Results As compared with the results obtained before centrifuge testing, FEV1.0, V50 ,V25 and DLCO were significantly lowered after ＋7 Gz testing, showing that the diffusion function was reduced and small airways had low-graded obstruction. After ＋9 Gz testing these changes aggravated with lowering of vital capacity in addition, while the differences between lung function indexes after ＋7 Gz and ＋9 Gz exposures were non-significant. Conclusion High ＋Gz exposure may lead after-effect on lung function. The duration of the after-effect and its long-term influence on pulmonary function of pilots need further investigation.
出处
《中华航空航天医学杂志》
CSCD
2005年第4期245-248,共4页
Chinese Journal of Aerospace Medicine
关键词
加速度
呼吸功能试验
飞行员
Acceleration
Respiratory function tests
Pilots
