Objective To assess the effect of open endotracheal suctioning (OS) and closed endotracheal suctioning (CS) on the gas exchange in ARDS dog lung and find the better way of endotracheal suction.

• 目的研究开放式气管内吸痰(OS)和密闭式气管内吸痰(CS)对急性呼吸窘迫综合征(ARDS)犬肺内气体交换的影响,选择更适宜ARDS犬气管内吸痰的方式。