Saracoglu KT, Demir A, Pehlivan G, Saracoglu A, Eti Z. Anaesthesiol Intensive Ther. 2018 Sep 17
This prospective clinical trial assessed and compared the airway leak pressure and the fiberoptic view of the i-gel in both supine and lateral positions. Moreover, the impact of the i-gel insertion on haemodynamics was also monitored. 100 patients undergoing saturation biopsy were intubated with the i-gel in the supine position, which was subsequently changed to lateral position. Several measurements were taken after intubation and change of position, which included mean arterial pressure, heart rate, peripheral O2 saturation and end-tidal CO2. Furthermore, number of insertion attempts, insertion time, oropharyngeal leak pressure (OLP), and device placement were also recorded. The i-gel was successfully inserted in 88 patients on the first attempt and the insertion time was circa 8 seconds. Moreover, the OLP (27.45 mm Hg supine and 26.04 in lateral position) and fiberoptic view were comparable in both positions. Hence, the i-gel can be safely employed in both supine and lateral positions.
Link to abstract.
Lai CJ, Liu CM, Wu CY, Tsai FF, Tseng PH, Fan SZ. BMC Anesthesiol. 2017 Jan 6;17(1):3
Randomised controlled trial of 40 patients divided equally between i-gel and ETT groups. Leak fraction was the primary outcome, defined as leak volume divided by inspired tidal volume. In the LPT position, no difference was recorded in the leak fraction. In the i-gel group there was 'notably less' leakage in LPT position than in supine - this difference was not observed in the ETT group. Incidence of postoperative sore throat was significantly lower in the i-gel group.
Link to abstract.
Kang F, Li J, Chai X, Yu J, Zhang H, Tang C. J Neurosurg Anesthesiol. 2015 Jan;27(1):37-41
Patients were randomised between the two groups, with device inserted in supine position. Insertion time and attempts, airway peak pressure and complications were among results measured. i-gel provided a higher airway seal pressure in the prone position and both devices recorded low complication rates.
Link to abstract