MICROCIRCULATION IN LOWER-LIMBS DURING LAPAROSCOPIC CHOLECYSTECTOMY

To study the influence of venous hypertension, which develops in lower limbs under pneumoperitoneal pressure, on microcirculation, plethysmo graphic measurements were performed in patients before and during lapa roscopic and traditional (open) cholecystectomy. During laparoscopy, i sovolumetric venous pressure (estimate of capillary pressure), and fil tration coefficient (estimate of patent capillary surface) decreased, which was not the case during open surgery. These results indicates th at venous hypertension during laparoscopic surgery does not extend to the microcirculation; vasoconstriction is a result of protective mecha nisms, which disable excessive fluid filtration in microcirculation. P arameters of macrocirculation (ambient venous pressure, compliance of calf tissue) changed intraoperatively in both groups similarly, irresp ectively of the surgical technique.