Fig. (1) A classification of videolaryngoscopic devices provided by Healy et al. (2012). In this system videolaryngoscopes are classified according their shape and form: Left: videolaryngoscopes with an integrated channel (to guide placement of the endotracheal tube). Middle: videolaryngoscopes taking the form of a videostylet (with the endotracheal tube placed around the device). Right: videolaryngoscopes with a rigid blade (without a channel, the endotracheal tube requiring some kind of independent stylet to guide placement).