Figure 4From: Comparison of the Glidescope® and Pentax AWS®laryngoscopes to the Macintosh laryngoscope for use by Advanced Paramedics in easy and simulated difficult intubation Graph representing the user rated degree of difficulty of use of each instrument in each scenario tested. The data are given as mean ± SD. * Indicates significantly different compared to both other Laryngoscopes. Labels: Normal – Start: Intubation of the normal airway at the start of the protocol; Cervical Immobilization – Immobilization of the neck with hard collar; Normal – End: Intubation of the normal airway at the end of the protocol.Back to article page