Figure 2. Time (seconds) to intubation using either the direct laryngoscope (bougie vs. stylet) and GlideScope (bougie vs. stylet) with normal or difficult airway settings. DL: direct laryngoscope, GVL: GlideScope Video Laryngoscope, SS: standard stylet, B: bougie, NL: normal airway settings, D: difficult airway settings.