i-gel® from Intersurgical: clinical evidence listing

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

Paediatric i-gel evaluation under nuclear magnetic resonance (NMR)

Monclus E, Garces A, Vassileva I, Sanchez A, Banchs R. Eur J Anaesthesiol 2010; 27(47): 155

70 children who were already scheduled for a cranial MRI scan took part in this study. The epiglottis was found to be in the bowl of the i-gel® in all patients, however the device still performed well.

Link to abstract.


In vitro study of magnetic resonance imaging artefacts of six supraglottic airway devices

Zaballos M, Bastida E, del Castillo T, de Villoria JG, Jiménez C. Anaesthesia 2010; 65(6): 569-572

In this study, the artefacts created during MRI by six supraglottic airways, the Classic LMA®, the ProSeal LMA®, the LMA Unique®, the LMA Supreme®, the Ambu® disposable laryngeal mask and the i-gel® were investigated. There were no artefacts with the i-gel® or Ambu® devices.

Abstract text

The i-gel®, a new supraglottic airway

Asai T, Liu EH. Masui 2010; 59(6): 794-797

In this study, the i-gel® was used to ventilate 20 spontaneously breathing adult patients during anaesthesia. Insertion time, success rate, ability to insert a gastric tube and complications (including the presence of blood on the device) were recorded. The i-gel® was inserted on the first attempt in 19 of 20 patients and had a mean insertion time of 12 seconds. Gastric tube insertion was possible in all cases. Removal was uneventful for all patients and did not result in any complications. The authors believe that the i-gel® is a useful device for maintaining the patient airway during general anaesthesia.

Abstract text



The use of an i-gel® supraglottic airway for the airway management of a patient with subglottic stenosis: a case report

Donaldson W, Michalek P. Minerva Anestesiol 2010; 76(5): 369-372

This report details the case of a 47-year-old woman with subglottic stenosis. During preoperative screening she stated that there had been difficulty inserting an endotracheal tube during an earlier procedure. During anaesthesia, a size four i-gel® was inserted on the first attempt. A fibrescope was passed down the i-gel® and into the trachea, where subglottic stenosis could be seen. The i-gel® showed no signs of leaking and did not cause any trauma. The authors note that this is the first case report where an i-gel® has been used in a patient with subglottic stenosis, and state that preoperative tests should be carried out before choosing to use the device in this situation.

Link to abstract.

Insertion of the i-gel® airway in prone position

Taxak S, Gopinath A. Minerva Anestesiol 2010; 76(5): 381

This case study describes the use of the i-gel® while the patient was in a prone position for surgery. A 45kg 16-year-old boy laid in a prone position with his head turned laterally. After induction of anaesthesia, a size three i-gel® was inserted on the first attempt. There were no adverse events either during or after surgery and the i-gel® was removed while the patient was still prone. Previous research has shown that the cLMA and ProSealTM airways can be inserted in the prone position, and i-gel®s have successfully ventilated prone patients who were turned over after insertion. However, this is the first reported case of i-gel® insertion while the patient is already prone. Routine use of this technique should only occur after further research has taken place.

Abstract text