RecruitingNot ApplicableNCT07525232

Stepwise PEEP vs Sustained Inflation in Bariatric Surgery Patients

Comparison of Stepwise PEEP vs Sustained Inflation Recruitment Maneuvers on Postoperative Oxygenation and Atelectasis in Bariatric Surgery Patients

Sponsor

Ain Shams University

Enrollment

100 participants

Start Date

Mar 19, 2026

Study Type

INTERVENTIONAL

Conditions

Recruitment Bariatric Surgery Candidate

Summary

Male and female patients Undergoing laparoscopic bariatric surgeries will be subjected for lung recruitment at end of surgery before emergence from anesthesia by two different methods . to evaluate which might be safer and more effective

Eligibility

Min Age: 18 Years

Inclusion Criteria3

Anesthesiologists (ASA) physical status II, of either sex Age ≥18 y.
Undergoing laparoscopic bariatric surgeries; sleeve gastrectomy, mini gastric bypass
BMI (35-60)

Exclusion Criteria5

Pre-existing severe pulmonary disease
Baseline hypoxemia SpO₂ <92% on room air
History of barotrauma
Previous pneumothorax
Known pulmonary bullae or emphysematous blebs

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Interventions

PROCEDUREsustained inflation recruitement

anesthesiologist adjust the ventilator to manual ventilation mode and ad¬just The ventilator was switched to manual mode, and the airway pressure-limiting valve was set to 30 cmH₂O. A sustained manual inflation was then applied by gradually squeezing the anesthesia reservoir bag over 3-5 seconds until a peak airway pressure (Ppeak) of 30 cmH₂O

PROCEDUREStepwise PEEP

: ventilation will be set to pressure control mode and the driving pressure maintained at 10 cmH2O with an initial PEEP of 5 cmH2O, respiratory rate 8-10, I:E 1-1PEEP will be then increased by 5 cmH2O ev¬ery 30 s until the Ppeak reached 30 cmH2O