Objective To observe the heterogeneous response of respiratory mechanics and inflammatory cytokines release in plasma of acute respiratory distress syndrome ( ARDS) dogs caused by pulmonary and extra-pulmonary insults to lung protective ventilation treatment. 目的观察在肺保护性通气条件下急性呼吸窘迫综合征(ARDS)模型犬呼吸力学、血气交换和外周血中炎性介质的变化。