Ghai A, Saini S, Hooda S. Anaesthesia 2009; 64(10): 1151
This letter is a response to Baxter’s 2008 report of lightened anaesthesia due to a leak from the gastric channel of the i-gel®. The authors found that they experienced similar problems with the LMA Supreme®. No glottic structures were visualised on fibreoscopy through the airway channel, and through the gastric channel, it revealed the tip in front of the glottis rather than the oesophagus.
Link to abstract.