21 May 2026 : Clinical Research
Monitoring Oxygen Metabolism Using the Oxygen Reserve Index in Patients Undergoing Robotic Prostatectomy: A Prospective Observational Study
Małgorzata M. Barud
ABCDEF 1,2*, Bartłomiej P. Turek BEF 2, Dorota Siwicka ACDEFG 1,2
DOI: 10.12659/MSM.952156
Med Sci Monit 2026; 32:e952156
Figure 3 Usefulness of the oxygen reserve index (ORi) in detecting hyperoxia (ROC curve analysis). The figure shows ROC curves illustrating the diagnostic utility of ORi in detecting hyperoxia at 3 selected measurement points: (A) BEG – before induction of anesthesia, (B) PP+T – after placing the patient in the Trendelenburg position and establishing pneumoperitoneum, and (C) ZERO – after returning the patient to the initial position. For each point, the sensitivity and specificity were assessed at a cut-off point >0, and diagnostic utility was determined based on the AUC with a 95% confidence interval. Statistical significance was assessed based on ROC analysis. Detailed values of sensitivity, specificity, AUC, and significance levels are presented in the text.