In modern wars, all most of the perforation wound, and the normal-frequency ventilation can't work well to the state of an illness, but the high-frequency ventilation can do it.
在现代战争中，伤员大部分都为枪弹伤(系贯穿伤)，而对于这种伤病情况，普通的常频呼吸机不能够达到最佳的通气效果，而高频呼吸机却能够达到较好的通气治疗效果。
ObjectiveTo compare the effect of the normal frequency jet ventilation with the high frequency jet ventilation in suspension laryngoscopy.
比较常频通气与高频通气在支撑喉镜手术前应用效果。
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