Conclusion:Closed endotracheal suction can induce severe hypoxemia,increase airway pressure,lower pulmonary compliance and decrease blood pressure in ARDS piglets either at PEEP 5 cmH2O or at PEEP 10 cmH2O level.

• [结论]不论在PEEP5cmH2O还是10cmH2O水平,密闭式吸痰可引起ARDS小猪较严重的低氧血症,使气道压力增高、肺顺应性降低、血压下降。