Asaad OM - The impact of different ventilation strategies [inspired oxygen concentration (FiO₂), end-tidal carbon dioxide (EtCO₂), and positive end expiratory pressure (PEEP)] on regional cerebral oxygen saturation (rScO₂) was assessed in obese patients subjected to laparoscopic bariatric surgery in the reverse trendelenburg position in addition to optimizing mean arterial pressure (MAP) in these patients. It was noted that rScO₂ was improved in these patients as a result of adjustment of ventilation strategies and hemodynamic optimization.