通气过度（Hyperventilation）在CA后常可发生，应予避免，因为可引起不良血流动力学效应，它可增加胸内压，降低心输出量，使PaCO2降低，直接导致脑血流量的减少...
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结论MLT可减少长期机械通气时气管导管气囊过度充气所致的并发症。
Conclusion MLT could reduce complications of excessive air filling into tube cuff during long-term mechanical ventilation.
神经外科；过度通气；颈内静脉血氧饱和度。
Neurosurgery; Excess ventilation; Jugular venous oxygen saturation.
结论过度通气综合征除呼吸困难外还常有其他众多症状，但查体都无异常，且常有明显的心因性诱因。
Conclusion Besides dyspnea, hyperventilation syndrome has many other symptoms as well as cardiac inducement, but it has no abnormal findings in physical and CT examination.
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