Tissue Oximetry's Measurement in Cytoreductive Surgery With Hyperthermic Intraperitoneal Chemotherapy

Tissue oximetry obtained from peripheral muscle can be used to measure the state of kidney's tissue oxygenation. 50 Adult female patients ASA 1-2 undergoing cytoreductive surgery with laparoscopic or laparotomy technique (for ovarian cancer) associated with hyperthermic intraperitoneal chemotherapy will be enrolled. The primary objective of our study is to evaluate whether there is a correlation between average intraoperative muscle tissue oximetry below 65% (a value which is considered critical in the literature for the resulting cellular damage) and postoperative renal damage (according to the AKIN and KIDGO classification) in patients undergoing cytoreductive surgery with hyperthermic intraperitoneal chemotherapy for ovarian cancer. Secondary objectives are: * describe the variation in muscle tissue oximetry and hemodynamic parameters (systolic, mean, diastolic blood pressure) during cytoreductive surgery with hyperthermic intraperitoneal chemotherapy . * describe the variation in renal function values (blood urea nitrogen, creatinine) and serum electrolytes (sodium, potassium, chloremia, calcemia) in the post-operative period (from the first to the seventh postoperative day).