The impact of pneumoperitoneum and steep Trendelenburg positioning on novel oxygenation and saturation indices in robot-assisted laparoscopic prostatectomies: A prospective observational study. - Tontu, Furkan; Akca, Hilal; Berktas, Cansu Kilinc; Asar, Sinan; Ozcan, Funda Gumus (Saudi Journal of Anaesthesia, 2025)