Dabrowiecki S
Department of General and Vascular Surgery, University School of Medical Sciences, Bydgoszcz, Poland.
Surg Laparosc Endosc. 1998 Apr;8(2):97-101.
To study the influence of venous hypertension, which develops in lower limbs under pneumoperitoneal pressure, on microcirculation, plethysmographic measurements were performed in patients before and during laparoscopic and traditional (open) cholecystectomy. During laparoscopy, isovolumetric venous pressure (estimate of capillary pressure), and filtration coefficient (estimate of patent capillary surface) decreased, which was not the case during open surgery. These results indicates that venous hypertension during laparoscopic surgery does not extend to the microcirculation; vasoconstriction is a result of protective mechanisms, which disable excessive fluid filtration in microcirculation. Parameters of macrocirculation (ambient venous pressure, compliance of calf tissue) changed intraoperatively in both groups similarly, irrespectively of the surgical technique.
为研究气腹压力下下肢出现的静脉高压对微循环的影响，在腹腔镜胆囊切除术和传统（开放）胆囊切除术患者术前及术中进行了体积描记测量。腹腔镜检查期间，等容静脉压（毛细血管压力估计值）和滤过系数（开放毛细血管表面积估计值）降低，而开放手术期间情况并非如此。这些结果表明，腹腔镜手术期间的静脉高压不会扩展至微循环；血管收缩是一种保护机制的结果，可防止微循环中液体过度滤过。无论手术技术如何，两组患者术中的大循环参数（周围静脉压、小腿组织顺应性）变化相似。
