Although the lung coefficient and lung perfusion index are increase at three different points in BLM group, RRL+BLM group and MPD+BLM group, especially on 3 and 7day. RRL+BLM group is lower than BLM group, but PaO2 higher on 3and and 7day.

• 各组肺指数和通透指数在BLM损伤各期普遍增高，以第3和第7天为重，红景天治疗组有所降低，氧分压也明显高于模型组。