The relationship betvveen increasing of intraabdominal pressure and transcutenous oxygen saturation of lower extremity.

Increased intraabdominal pressure decreases the venous return due to compression of vena cava inferior. Lower part of body is supposed to be affected mostly from this hemodynamic changes, especially microcirculation and aftervvard oxygen saturation in lower extremities. We investigated the relationship betvveen intraabdominal pressure and oxygen saturation of lovver extremity measured by pulse oxymetry and vvhether oxygen saturation of leg is an indicator for intraabdominal pressure. VVe employed on 5 dogs vveighing mean 14.2 kg. Under general anaesthesia, pneumoperitoneum was established via Veres cannula and normal air insufflation at 6 different pressure levels ranging 0-50 mmHg and 3 different time intervals. Measured lovver extremity oxygen saturations vvere analysed by bivariate correlation. İntraabdominal pressure shovved a significant negative correlation with lovver extremity oxygen saturation(p=0.001, r=0.97). As a conclusion, lovver extremity oxygen saturation seems tobea reliable indicator for increased intraabdominal pressure. Further clinical and experimental studies are necessary in this subject.