加压呼吸对飞行员脑血流图的影响

• 作 者: 马福廷 进克效 刘风华 郝建华 李梅
• 机 构: 中国人民解放军第466医院,中国人民解放军第466医院,中国人民解放军第466医院,中国人民解放军第466医院,中国人民解放军第466医院 北京 100081,北京 100081,北京 100081,
• 出 处: 航空军医
• 发表日期: 1997年04期
• 关键词: 加压呼吸 脑血流图 密闭头盔 加压供氧 高空代偿服 脑电描记术 正压呼吸 供血状况 血流供应 呼吸频率

目的观察实施加压供氧时飞行员脑血流的变化。方法选健康飞行员50名,着高空代偿服、密闭头盔,以适当的余压值在地面进行加压呼吸试验,以脑血流图判断脑部供血状况。结果加压呼吸中呼吸频率加快,脑部血流供应障碍,加压值越高,时间越长,影响越大。结论加压供氧时严重影响脑部血液供应。脑血流图可作为加压呼吸锻炼的生理指标。

Objective To observe the changes of cerebral blood flow in pilots during pressurized oxygen supply. Methods Fifty healthy pilots were selected, fitted with high-altitude service uniforms and airtight helmets. The pressurized respiration test was conducted on the ground with appropriate residual pressure to determine the cerebral blood supply status by cerebral blood flow diagram. The results of pressurized breathing breathing speed, brain blood supply disorders, the higher the value of pressure, the longer the greater the impact. Conclusion Serious blood supply to the brain is affected by pressurized oxygen supply. Cerebral blood flow can be used as a physiological indicator of pressurized breathing exercises.