通过脉冲振荡计评估的急性+Gz暴露的肺功能变化
Aerospace medicine and human performance
|January 24, 2025
概括
战斗机飞行员高Gz暴露不会对肺功能产生负面影响. 脉冲振荡计显示,由于抗G应力机动,小气道功能可能得到改善.
科学领域:
- 航空航天医学 航空航天医学
- 肺部病理学 肺部病理学
- 人类生理学 人类生理学
背景情况:
- 第五代战斗机操作涉及高重力 (+Gz).
- 人们对+Gz暴露对军用飞行员肺部功能的急性影响存在担忧.
- 脉冲振荡计 (IOS) 是一种评估肺功能的非侵入性方法.
研究的目的:
- 调查受控+Gz暴露 (高达+9Gz) 对军用飞行员肺功能的急性影响.
- 使用脉冲振荡计 (IOS) 来评估这些影响.
- 评估加拿大皇家空军 (RCAF) 和荷兰皇家空军 (RNLAF) 飞行员的肺功能变化.
主要方法:
- 来自RCAF (n=30) 和RNLAF (n=28) 的军事飞行员接受了高G离心机培训.
- 在正常的潮呼吸过程中,使用TremofloTM IOS设备测量肺功能.
- 进行了基线IOS测量,然后在2-10分钟内进行暴露后测量.
主要成果:
- 两项RCAF和RNLAF研究都显示,肺部顺应性显著增加,肺部抵抗性下降.
- 观察到小气道阻力显著降低,特别是在RNLAF研究中.
- 这些发现表明,在较高的Gz水平下,可能对小气道功能产生有益影响.
结论:
- 对高+Gz的急性暴露,与抗G套装和紧张机动一起,没有证明对飞行员肺功能有负面影响.
- 有证据表明,小气道功能可能会得到改善.
- 抗G应力机动可以通过增加胸内压力和拉伸小气道,有助于改善肺功能.
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