阳性压力通风在娱乐航空期间改善了高度的氧气和:一项试点研究
Jenna L Taylor1,2, Aidan K Downs1, Crystal L Danner3
1Human Integrative and Environmental Physiology Laboratory, Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA.
Physiological reports
|February 5, 2025
概括
双级正气道压力 (BPAP) 装置可以提高飞行高达12500英尺的休飞行员的氧气和度. 这项研究发现,BPAP在没有补充氧气的情况下改善了周围氧和度 (SpO2).
科学领域:
- 航空生理学 航空生理学
- 呼吸系统医学 呼吸系统医学
- 航空航天医学 航空航天医学
背景情况:
- 娱乐航空使飞行员暴露于环境压力降低和高度较低的氧气水平.
- 低血压缺氧会损害生理功能和认知表现.
- 补充氧气的使用是常见的,但对于所有休飞行员来说可能不是可行的或可取的.
研究的目的:
- 为了评估商用双层正气道压力 (BPAP) 装置在模拟娱乐飞行期间改善周边氧和 (SpO2) 的有效性.
- 评估BPAP对生理参数的影响,包括中脑动脉速度 (MCAv),心率 (HR),呼吸率 (RR) 和潮体积 (TV) 指数.
- 为了确定BPAP是否影响认知功能,特别是反应时间,在模拟的高度.
主要方法:
- 十名有娱乐飞行经验的健康成年人参加了一项随机交叉研究.
- 参与者在 8000 和 12,500 英尺的模拟高度的非压缩飞机上进行了标准化的飞行概况.
- 物理数据 (SpO2,MCAv,HR,RR,TV指数) 被持续监测,并使用心理运动警测试在BPAP和控制条件下评估认知表现.
主要成果:
- 高度显著降低了SPO2,MCAv和RR,同时增加了TV指数和HR.
- 使用BPAP显著增加了8,000英尺 (94%对92%) 和12,500英尺 (89%对86%) 的平均SpO2.
- BPAP在两种高度降低了MCAv,并在8,000英尺处增加了TV指数,但对RR或反应时间没有显著影响.
结论:
- 商业BPAP设备显示,在没有补充氧气的情况下,在高达12,500英尺的高度上改善娱乐飞行员的SpO2的潜力.
- BPAP可能会减轻低性缺氧的一些生理影响,尽管需要进一步的研究.
- 调查结果表明,BPAP可能是一个可行的选择,以支持在中等高度操作的飞行员.
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