Which Ventilatory Strategy is Better for Lung in Upper Abdominal Surgeries?

The aim of our study is to assess the effect of using PEEP with and without recruitment maneuver on atelectasis and lung aeration during open upper abdominal surgeries by ultrasonography. Application of PEEP improves intraoperative oxygenation and thus could minimize the incidence of postoperative atelectasis and respiratory complications during abdominal surgeries. A recent study found that PEEP and RM prevented intraoperative aeration loss, which didn't persist after extubation when comparing effects of positive end-expiratory pressure/recruitment maneuvers with zero end-expiratory pressure on atelectasis during open gynecological surgery by ultrasonography