Marotte H, Toure C, Florence G, Lejeune D, Kerguelen M
Aerospace Medical Laboratory Flight Test Center, Bretigny/Orge, France.
Aviat Space Environ Med. 1990 Aug;61(8):690-4.
The protection of the transport aircraft crew against cabin decompression hazards at high altitude (Z less than 45,000 ft) (13,700 m) is achieved by positive pressure breathing (PPB). Currently, many PPB schedules are used. Our research was performed to propose a PPB schedule, using the hypothesis of a decompression at high altitude, including a stay at the flight level and an emergency descent at the rate of 15,000 ft.min-1. The measures were arterial oxygen saturation, heart rate, speech capabilities, and psychomotor performance. The tests were conducted up to 45,000 ft. They show that the best protection at 45,000 ft is afforded when the PPB is included between 2 and 2.5 kPa (15 to 18.75 mm Hg).
通过正压呼吸（PPB）可保护运输机机组人员在高空（高度低于45,000英尺，即13,700米）免受座舱减压危害。目前，人们使用多种PPB方案。我们开展此项研究是为了提出一种PPB方案，该方案基于高空减压的假设，包括在飞行高度停留以及以每分钟15,000英尺的速度进行紧急下降。所测量的指标为动脉血氧饱和度、心率、言语能力和心理运动表现。测试进行至45,000英尺高度。结果表明，当PPB压力维持在2至2.5千帕（15至18.75毫米汞柱）时，在45,000英尺高度可提供最佳保护。
