Temme Leonard A, St Onge Paul, Adams Mark, Still David L, Statz Jonathan K, Williams Steven T
Visual Protection and Performance Division, U.S. Army Aeromedical Research Laboratory, 6901 Farrel Road, Fort Rucker, AL 36362.
Mil Med. 2017 Mar;182(S1):210-215. doi: 10.7205/MILMED-D-16-00053.
Since hypoxia remains one of the most important physiological hazards the aviation environment poses, military aviators are trained to recognize symptoms of hypoxia in order to implement appropriate safety procedures and countermeasures when hypoxia occurs. A widely used commercial instrument for hypoxia training, demonstration, and research is the Reduced Oxygen Breathing Device (ROBD). Here we describe a novel, inexpensive method to use the ROBD's breathing loop pressure (BLP) to measure respiration rate, a critically important response parameter for hypoxia.
The ROBD can be controlled by a computer to export several variables including BLP, via the ROBD's RS232 port. An archived database was reanalyzed to assess the BLP data. New instrumentation added independent measures of respiration and expired oxygen and carbon dioxide; these measures were integrated with the ROBD output.
Analysis of the archived data showed that the BLP reflected realistic breathing patterns. The new instrumentation integrated well with the ROBD, and independently supported the potential of the BLP as a valid measure of respiration.
The ROBD's BLP data may provide a basis for a reliable, sensitive measure of respiration that is available at no additional cost.
由于低氧仍然是航空环境带来的最重要的生理危害之一，军事飞行员接受培训以识别低氧症状，以便在低氧发生时实施适当的安全程序和应对措施。一种广泛用于低氧训练、演示和研究的商业仪器是低氧呼吸装置（ROBD）。在此，我们描述一种新颖、廉价的方法，利用ROBD的呼吸回路压力（BLP）来测量呼吸频率，这是低氧一个极其重要的反应参数。
ROBD可由计算机控制，通过其RS232端口输出包括BLP在内的多个变量。对一个存档数据库进行重新分析，以评估BLP数据。新增的仪器设备可独立测量呼吸以及呼出的氧气和二氧化碳；这些测量结果与ROBD的输出相结合。
对存档数据的分析表明，BLP反映了实际的呼吸模式。新的仪器设备与ROBD很好地整合在一起，并独立支持了BLP作为呼吸有效测量指标的潜力。
ROBD的BLP数据可能为一种可靠、灵敏的呼吸测量方法提供基础，且无需额外成本。
