https://www.selleckchem.com/products/5-n-ethylcarboxamidoadenosine.html 5 ± 1.9 vs. 5.0 ± 0.0 cmH2O and T2, 12.4 ± 1.9 vs. 5.0 ± 0.0 cmH2O, both P  less then  0.001). Partial pressures of oxygen decreased significantly from baseline during pneumoperitoneum in the control group but not in the intervention group. Nevertheless, the changes in partial pressures of oxygen did not differ between groups. Compliance of the respiratory system (CRS) significantly decreased and driving pressure significantly increased during pneumoperitoneum in both groups. However, the changes in CRS and driving pressure were significantly less in the intervention group. Transpulmonary pressure during expiration was maintained in the intervention group while it decreased significantly in the control group. CONCLUSION PEEP setting guided by Poeso measurement showed no beneficial effects in terms of oxygenation but respiratory mechanics were better during laparoscopic gynaecological surgery. TRIAL REGISTRATION ClinicalTrials.gov identifier NCT03256396.BACKGROUND The chronic use of opioids and glucocorticoids is associated with serious side effects. Moreover, both medications are related to poor long-term postoperative outcomes. OBJECTIVE The study aimed to investigate the association between pre-operative chronic opioid and glucocorticoid use and 90-day mortality after noncardiac surgery. DESIGN Retrospective, population-based cohort study. SETTING Single tertiary academic hospital. PATIENTS The study enrolled adult (≥18 years of age) patients admitted to Seoul National University Bundang Hospital, between January 2012 and December 2018 for planned, elective, noncardiac surgery. MAIN OUTCOME MEASURES The study compared the 90-day mortality for patients using opioids or glucocorticoids chronically (≥3 months) prior to surgery and for opioid-naïve and glucocorticoid-naïve patients. RESULTS A total of 112 606 patients were included in the study. Among them, 107 843 (95.9%) were opioid-naïve and gl