Global Optimal PEEP for Anesthetized Patients

Patients are at increased risk of lung injury throughout the perioperative period. Numerous intraoperative measures have been postulated and implemented to modulate anesthesia- and ventilation-related injuries. Based on these studies, PEEP has been suggested to both improve oxygenation and keep the lungs open in anesthetized patients if the operation lasts for more than two hours. Nevertheless, if the anesthesia continues for less than two hours, FEEP is appropriate only for keeping the lungs open rather than improving oxygenation (1). Accordingly, applying PEEP is superior to ZEEP in anesthetized patients to avoid postoperative atelectasis