The rabbits were randomly divided into three groups ( n =9 in each): sham operated group (sham), PIR group (I-R) and PIR+ propofol group (PPF).

• 实验兔 2 7只 ,随机均分为假手术对照组 (sham)、肺缺血 -再灌注组 (I-R)和肺缺血 -再灌注加异丙酚治疗组 (PPF)。