In this process, if may pass through drum room mutual lack of understanding ventilation, although the canyon department block system will not have on the drum room negative pressure.
在这一过程中如果可以经鼓室隔膜通气的话，尽管峡部闭锁也不会产生上鼓室的负压。
Results: Negative pressure ventilation produced an increase in tidal volume and no influence on hemodynamic parameters.
结果：间歇负压通气能够增加实验犬潮气量，但对血流动力学无影响。
Objective To study the hemodynamic effects of negative pressure ventilation.
目的研究体外负压通气对血流动力学的影响。
Objective: To observe the effects of intermittent negative pressure ventilation on ventilation and hemodynamics in dogs.
目的：观察间歇负压通气时通气压力对实验犬的通气和血流动力学的影响。
Objective: To observe the effects of intermittent negative pressure ventilation on ventilation and hemodynamics in dogs.
目的：观察间歇负压通气时通气压力对实验犬的通气和血流动力学的影响。
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