i-gel® from Intersurgical: clinical evidence listing

A comprehensive list of all known published clinical evidence on the device

Success rate of airway devices insertion: laryngeal mask airway versus supraglottic gel device.

Pournajafian A, Alimian M, Rokhtabnak F, Ghodraty M, Mojri M. Anesth Pain Med. 2015 Mar 30;5(2):e22068.

61 patients were randomised for cLMA or I-gel insertion for brief orthopaedic surgery. Insertion time, success/failure rate, and incidence of complications (sore throat, hoarseness, bleeding) were all recorded. The devices were comparable, with a low incidence of complications overall and no instances of blood in the airway or on the device. The I-gel is therefore an acceptable alternative to the LMA Classic.

Link to abstract.

Comparison of the i-gel and other supraglottic airways in adult manikin studies: systematic review and meta-analysis

An J, Nam SB, Lee JS, Lee J, Yoo H, Lee HM, Kim MS. Medicine (Baltimore). 2017 Jan;96(1):e5801

Authors conducted a specialised search of study databases for eligible randomised controlled trials, setting device insertion time and first-attempt insertion success rate as their primary outcomes. In the 14 RCTs included, i-gel was faster than the majority of other supraglottic airways, with only three others recording shorter insertion times. Authors concluded that the 'unapparent advantage' of insertion success rate indicated the need for further evidence gathering in this area.

Link to abstract.

The i-gel Supraglottic Airway as a Conduit for Fibreoptic Tracheal Intubation - A Randomized Comparison with the Single-use Intubating Laryngeal Mask Airway and CTrach Laryngeal Mask in Patients with Predicted Difficult Laryngoscopy

Michálek P, Donaldson W, McAleavey F, Abraham A, Mathers RJ, Telford C. Prague Med Rep. 2016;117(4):164-175

Comparative study of three supraglottic airways as conduits in patients with predicted difficult laryngoscopy. Primary outcome measure was success rate of tracheal intubation through the device. No statistical difference was recorded in success rates between devices, however i-gel proved quicker to insert compared to ILMA and the intubation time was shorter compared to CTrach. i-gel is a suitable alternative to sILMA and CTrach in this scenario, and the shorter times recorded may provide an advantage in cases of difficult oxygenation.

Link to abstract.

Randomized comparison of the i-gel(TM) with the LMA Supreme (TM) in anesthetized adult patients

Beleña JM, Núñez M, Vidal A, Gasco C, Alcojor A, Lee P, Pérez JL. Anaesthesist. 2015 Apr;64(4):271-6

140 patients split into device groups, with speed of insertion, success rates, leak pressure and tidal volume evaluated. i-gel proved quicker to insert and generally the results were comparable.

Link to abstract.

A randomized equivalence trial comparing the i-gel® and laryngeal mask airway Supreme in children

Jagannathan N, Sommers K, Sohn LE, Sawardekar A, Shah RD, Mukherji II, Miller S, Voronov P, Seraphin S. Paediatr Anaesth.; 23(2): 127-33

Total of 170 children were assigned to either the i-gel® or LMA Supreme®, with leak pressure the primary outcome measured. Secondary evaluations included insertion time, insertion success rate, fibreoptic view and complications, to name a few. Resulting median leak pressure was higher with i-gel® and the authors conclude it could be a ‘useful alternative to the Supreme®’.

Link to abstract.