P48: General anesthesia with super-imposed high frequency jet ventilation can reduce peak airway pressure and improve oxygenation during laparoscopic bariatric surgery

Abstract

Laparoscopic bariatric surgery rapidly spread worldwide because of less invasiveness. Despite of advantages, laparoscopic surgery is associated with more pronounced intra-operative respiratory changes than open surgery. Morbid obesity patients have a decrease in respiratory system compliance. These changes cause a decreased pulmonary reserve, faster desaturations and make them more difficult to ventilate with positive pressure ventilation. Pneumoperitoneum during laparoscopic surgery contributes to high peak airway pressure (PAP), decrease in the Functional Residual Capacity (FRC) and increasing PaCO2.