Is Regional Oxygen Saturation Effective in Predicting Perfusion Parameters and Patient Outcomes in Liver Resection

InSpectra Tissue Spectrometer Model 1615 probe (Hutchinson Technology Inc. Hutchinson, MN, USA) probes will be placed on the skin area corresponding to the patients' liver lodge prior to induction of anesthesia. In addition, the probes of both devices will be placed in the renal site on the same side. Basal values will be measured with both devices and StO2 values in the devices will be recorded every 15 minutes. Probes will not be removed during surgery and for 24 hours postoperatively.

O3TM Regional Oximeter System (O3 System, Masimo Corporation, Irvine, CA) probes will be placed on the skin area corresponding to the patients' liver lodge prior to induction of anesthesia. In addition, the probes of both devices will be placed in the renal site on the same side. Basal values will be measured with both devices will be recorded every 15 minutes. Probes will not be removed during surgery and for 24 hours postoperatively.