摘要 用家兔对二种不同的腹腔镜入路进行充气实验研究，腹腔内组动脉二氧化碳分压平均升高1.48kPa(1kPa=7.5mmHg)；腹膜外组动脉二氧化碳分压平均升高0.69kPa。提示二氧化碳在腹膜外充气时比在腹腔内充气时全身吸收要少，同时提示动脉血pH值和氧分压在两种入路时均无明显变化。进一步对二组行不同入路腹腔镜手术患者的血气进行分析比较，发现二组患者动脉血二氧化碳分压均有明显升高，血pH值均有明显下降，但二组间的血气变化无明显差异。考虑腹腔镜经腹入路的合并症及泌尿系统的特点，认为经腹膜外入路对多数泌尿系疾病更适宜。

    A study on the intraperitoneal andretroperitoneal insufflation of carbon dioxide for laparoscopy Wu Shiliang, Na Yanqun, Hao Jinrui, et al. Institute of Urology,Beijing Medical University, Beijing 100034

    Abstract Intraperitoneal and retroperitoneal insufflation of carbon dioxidewas carried out in experimental rabbits. A mean rise of 1.42kPa of PaCO₂ wasnoted in the intraperitoneal group and 0.69kPa in the retroperitoneal group. There hasbeen no significant difference in pH and PaO₂ between the two groups. The samewas done for patients during laparoscopy. An obvious rise of PaCO₂ and a dropof pH were found in all the patients no matter whether the insufflation has beenintraperitoneal or retroperitoneal. No significant difference in blood gas change wasobserved between the intra-and retro-peritoneal group. As laparoscopy via theintraperitoneal route yields a higher morbidity, the retroperitoneal route was believed tobe more feasible for most patients with urological diseases.

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