Randomized comparative study between classic laryngeal mask airway and I gel airway in obese patients having BMI 35-40 during elective non abdominal surgery / Fatma Ibrahim Elsayed Salman ; Supervised Nadia Youssef Hamed Helmy , Tamer Mohamed Kheir , Ahmed Farag Mohammad

Thesis (M.Sc.) - Cairo University - Faculty of Medicine - Department of Anaesthesia

Background: In this study, we compare between classic laryngeal mask airway versus I gel airway as a conduit for ventilation in obese patients with BMI 35 -40 during elective non abdominal surgery. Methods and material: 50 Adult obese patients with BMI 35-40 scheduled for elective non abdominal surgery under general anesthesia are randomly divided into 2 equal groups: 1- Group A (n = 25), in which classic laryngeal mask is used for ventilation. 2- Group B (n = 25), in which I gel mask is used for ventilation. This study compared between cLMA and I gel regarding insertion success rate, the time of insertion, leaking pressure, assessment of position by fiber optic, hemodynamic, Spo2 for each device during insertion and maintenance of general anaesthesia and postoperative complications in obese patients. Results: In our study, we found that the I gel needed shorter time for insertion (9 (2.5) sec) than cLMA (10(2) sec). This finding was statistically significant. As regards the mean airway Leaking pressure, It was 25(6) cmH20 in I gel mask while it was 18(2) cmH20 in cLMA mask.That is statistically significant (p value =<0.001). Although time of insertion in I gel lesser than cLMA, 4 cases need second attempt to be inserted in I gel group in contrast to cLMA that only one case needs second attempt .That was statistically insignificant. Concerning hemodynamic monitoring, there was hemodynamic stability and no episodes of hypoxia. We recorded a baseline reading of heart rate, systolic blood pressure, diastolic blood pressure and oxygen saturation before insertion of both devices. A second reading was taken after insertion of both devices, just before removal. The fourth reading was recorded 1 min after removal of both devices. There was statistically insignificance regarding all hemodynamic variables and oxygen saturation between both groups

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