恐惧中的人可能会每分钟呼吸30次。这是“换气过度”。
Someone panicking can take as many as 30 breaths a minute. This is “hyperventilation”.
在浓度超过1.5%时，二氧化碳可以造成换气过度、头痛、视力紊乱、颤抖、失去知觉和死亡。
At concentrations in excess of 1.5%, carbon dioxide may produce hyperventilation, headaches, visual disturbances, tremor, loss of consciousness, and death.
压力和焦虑是由于换气过度引起的，换气过度会增加血液中的氧含量，不幸的是同时也会引起你失去知觉的副作用。
Stress and anxiety are common causes of hyperventilation, which increases the amount of oxygen in your blood but can also have the unfortunate side effect of causing you to pass out.
过度换气会使正常受试者的血压轻微下降，而患有自律衰竭患者的下降幅度则较大。
Hyperventilation produces small decreases in blood pressure in normal subjects and large decreases in patients with automatic failure.
方法：对33例常规脑电图（ EEG）正常或无特异性改变的患儿进行了蝶骨电极加过度换气试验（HV）描记后出现痫样放电的病例进行分析。
Methods: Sphenoidal electrodes and HV were done and the epileptiform discharges recording were analysed in 33 children who with normal or non-specific change EEG.
方法：对33例常规脑电图（ EEG）正常或无特异性改变的患儿进行了蝶骨电极加过度换气试验（HV）描记后出现痫样放电的病例进行分析。
Methods: Sphenoidal electrodes and HV were done and the epileptiform discharges recording were analysed in 33 children who with normal or non-specific change EEG.
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