腹腔镜下胃癌根治术是目前治疗胃癌的重要手段,该方法具有视野和解剖结构清晰,手术创伤小,患者术后恢复快等优点。建立气腹的气体是主要是CO2,具有无色无味,容易腹膜被吸收,价格便宜等优点。但是CO2通过腹膜吸收入血,导致血液p H值降低与二氧化碳分压升高。由于人体通过肺、肾脏等器官排泄CO2,使血液中CO2维持在正常范围内。当肺,肾脏有严重的功能障碍或者CO2吸收入血过多,都将打破这一平衡,导致酸 Laparoscopic radical gastrectomy is an important method for the treatment of gastric cancer. The method has the advantages of clear field of vision and anatomical structure, less surgical trauma and quick recovery after operation. The establishment of pneumoperitoneum gas is mainly CO2, with colorless, tasteless, easy to absorb peritoneum, cheap and so on. However, CO2 is absorbed into the bloodstream through the peritoneum, resulting in a decrease in blood p H and an increase in partial pressure of carbon dioxide. As the body through the lungs, kidneys and other organs excreted CO2, so that the blood of CO2 maintained within the normal range. When the lungs, kidneys have severe dysfunction or CO2 absorption into the blood too much, will break this balance, resulting in acid