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目的 To explore the effect of telmisartan on ventilator induced lung injury(VILI)of rats and its probable mechanisms.方法 Thirty male wistar rats were randomly divided into three groups:the control group,the high tidal volume ventilation(HVT)group,and the telmisartan pretreatment(TEL)group.The pathological changes of lung tissues were observed in each group.The ALI scores,the wet/dry(W/D)weight ratio,and the levels of protein in BALF were calculated.Apoptosis of lung tissue wasdetected by using terminal deoxynucleodityl transferase-mediated dUTP nick-end labeling(TUNEL).AngⅡ in lung tissues wasdetected by ELISA.