Methods patients ASA Ⅰ-Ⅱ grade with laparoscope operation (more than or equal to hours) were chosen to determine MAP,方法 选择≥ h腹腔镜手术患者例,ASA Ⅰ～Ⅱ级,于气腹前、气腹后0min、0min、80min分别测定MAP、HR、PaW、PETCO及颈内静脉置管测CVP。