i-gel® from Intersurgical: clinical evidence listing

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

The LMA-Supreme versus the I-gel in simulated difficult airway in children: a randomised study

Kus A, Gok CN, Hosten T, Gurkan Y, Solak M, Toker K. Eur J Anaesthesiol. 2014 May;31(5):280-4

In this double-blind study, the scenario was made more difficult by using a cervical collar. Primary aim was to compare leak pressures between devices, with success rate, insertion and fibreoptic view other parameters measured. First attempt success and leak pressure was higher with LMA Supreme. Both devices proved effective, and differences may not be clinically significant.

Link to abstract

Reverse technique for i-gel® supraglottic airway insertion

Sen I, Bhardwaj N, Latha YS. J Anaesth Clin Pharmacol 2013; 29: 128-9

Case reported of tongue folding during procedure on a 30-year-old woman. Usual insertion technique did not provide a patent airway, so the authors confirm they used a reverse technique - proving successful. Authors conclude the technique was atraumatic and may be a suitable back-up.

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The effects of prewarming the I-gel® on fitting to laryngeal structure

Nishiyama T, Kohno Y, Kim HJ, Shin WJ, Yang HS. The American Journal Of Emergency Medicine 2012; 30(9): 1756- 1759

180 patients were randomised into two equal groups, one for insertion of i-gel® at room temperature, the other at 37 degrees centigrade. Insertion time, number of insertion attempts, inspiratory and leak pressures, and leak fraction were compared. Report found no significant difference between the two groups.

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Randomized crossover comparison of the laryngeal

Singh J, Yadav MK, Marahatta SB, Shrestha BL. Indian J Anaesth 2012; 56(4): 348-52

Prospective, crossover, randomised trial of i-gel® against cLMA on 48 post-burn neck contracture patients with reduced neck movement and mouth opening. Primary outcome was overall success rate, with other measurements taken in time to ventilation, leak pressure, fibreoptic view and visualisation of square wave pattern. Success rate for i-gel® was 91.7%, against 79.2% for cLMA. i-gel® outperformed cLMA in all measurements. Authors conclude their study has ‘better clinical performance in the difficult airway management of the airway in the post burn contracture of the neck’.

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