i-gel® from Intersurgical: clinical evidence listing

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

Spatial relationship of I-gel and Ambu® AuraOnce on pediatric airway: a randomized comparison based on three dimensional magnetic resonance imaging

Aqil M, Delvi B, Abujamea A, Alzahrani T, Alzahem A, Mansoor S, Aaljazaeri A. Minerva Anestesiol. 2016 Jun 17

Sixty paediatric patients were split between the two groups, with scans of head and neck performed after confirmation of device placement. Both devices 'significantly' reduced the area of glottis opening. i-gel produced greater dilation of upper oesophogeal sphincter. Authors conclude more studies needed to test these results to 'reduce morbidity on pediatric airway'.

Link to abstract

A clinical evaluation of the pediatric i-gel™ for airway management during MRI examination

Corso RM, Battelli D, Maitan S, Zampone S, Agnoletti V. J Anaesthesiol Clin Pharmacol. 2014 Apr;30(2):288-90

Database review of 45 patient records meeting authors' set criteria, which included i-gel sizes 1-2.5. i-gel use in MRI produces no artefacts and the authors conclude the device is a useful device in this scenario, offering quick insertion time and low rate of complications.

Link to abstract

Use of i-gel in magnetic resonance imaging

Kaur K, Bhardwaj M, Kumar P, Lal J, Johar S, Hooda S. Acta Anaesthesiol Taiwan. 2014 Mar;52(1):41-2

Image quality and trauma evidence were measured in 10 adult patients undergoing MRI. Authors conclude I-gel causes the least ferromagnetic interference compared with other devices and improves the image quality.

Link to abstract

Magnetic resonance imaging study of the in vivo position of the extraglottic airway devices i-gel® and LMA Supreme® in anaesthetized human volunteers

Russo SG, Cremer S, Eich C, Jipp M, Cohnen J, Strack M, Quintel M & Mohr A. BR J Anaesth 2012; 109(6): 996-1004

This randomized cross-over study of 12 volunteer patients was conducted primarily to measure the in situ position of the LMA Supreme® and i-gel® via MRI scan. Position was also assessed functionally and optically by fibrescope. Results showed that the devices differed significantly: the LMA Supreme® protruded deeper into the oesophageal sphincter, whilst i-gel® caused greater compression of the tongue. Glottic aperture reduction and hyoid bone displacement were also measured. Authors deem the results relevent to the risk of aspiration, glottic narrowing, airway resistance and soft-tissue morbidity.

Link to abstract.

 

The i-gel™ - A promising airway device for magnetic resonance imaging suite

Taxak S, Bhardwaj M, Gopinath A. J Anaesth Clin Pharmacol 2012; 28(2): 263–264

Two successful cases of paediatric i-gel® used to manage the airway during brain MRI under general anaesthesia. The first, a three-month-old, was maintained using size one; whilst a size two was used on the second case, a boy aged three-and-a-half with a Mallampati score of two. Usual capnography readings taken to ensure secure placement, and in both cases there was no evidence of desaturation. Compared to other laryngeal mask airways, the authors conclude that i-gel® suffers no risk of displacement, meaning intubation does not have to be repeated on known sensitive patients. They also deduce that i-gel® has other advantages, including ease of insertion and minimum adverse effects on removal of the device. Large studies are required, however, to ‘confirm its usefulness’.

Link to abstract.