模拟座舱压力变化对中耳影响的研究

Effects of Simulated Gabin Pressure Change on the Middle Ear in Human

本研究结果表明,由地面上升到低高度上耳咽管开放压力并非是等压差的。引起这种差异是与气压密度的改变和中耳腔容积的变化有密切关系;座舱压力波动引起的耳痛阈压力不在于压力波动率和压力波动次数,主要决定于正向波中耳负压的累积程度;座舱增压过程压力变化率的大小与产生耳痛并没有直接关系,主要与中耳负压的累积程度直接相关;座舱压力变化导致听力降低,听力降低程度与压力变化率大小密切相关。

The results of our study indicated that open pressure of eustachian tube was difference in Pressure difference when rising from ground to low altitude,we found changes in atmospheric pressure density and volume of the middle ear cavity played a verry important part in causing this difference.Aural pain threshold pressure caused by cabin pressure wave motion did not depend on the rates and timee of the pressure changes,but mainly on the positive pressure wave and cumulation of negative pressure in the middle ear.Cabin pressure change rates during pressurization had no direct bearing on causing aural pain,but be directly interrelated to cumulation of negative pressure in the middle ear.Cabin pressure changes led to partial hearing loss.Severity of hearing loss depended very much on pressure change.