Oxygen Deficiency

The aim of this study is to evaluate the effect of the Reverse Trendelenburg position on oxygenation (SpO₂/FiO₂ ratio) in the early postoperative period in patients undergoing laparoscopic surgery. In our study, obesity is considered as a comparative subgroup in terms of variability of this effect; additionally, the STOP-BANG score, which measures the risk of obstructive sleep apnea syndrome, is examined as an auxiliary indicator.

Tissue oximetry obtained from peripheral muscle measures the state of tissue oxygenation of various organs and, as already widely described in the literature, can be used to measure the state of kidney's tissue oxygenation. However, there is no evidence in the existing scientific literature on the use of muscle tissue oximetry in patients undergoing cytoreductive surgery for ovarian cancer with hyperthermic intraperitoneal chemotherapy. 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 in patients undergoing cytoreductive surgery with hyperthermic intraperitoneal chemotherapy for ovarian cancer.

The main objective of the study is to assess the "FreeDom" innovative strategy (FreeO2 at Domicile) to reduce hospitalization duration in patients with COPD exacerbation. This strategy associates early hospital discharge, automated O2 flow weaning with FreeO2 system, telemedicine and tele-rehabilitation. The main hypothesis of this study is that the FreeDom strategy will reduce the number of hospitalization day by 50 percent at day 30.