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。
Results: Negative pressure ventilation produced an increase in tidal volume and no influence on hemodynamic parameters.
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。
Objective: To observe the effects of intermittent negative pressure ventilation on ventilation and hemodynamics in dogs.
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