2Noppens RR,Mbus S,Heid F,et al.Evaluation of theMcGrath series 5 videolaryngoscope after failed direct laryn-goscopy[J].Anaesthesia,2010,65(7):716-720.
3Graterol J,Quader K.McGrath videolaryngoscope for an an-ticipated difficult airway[J].Br J Anaesth,2009,103(2):308-309.
4van Zundert A,Maassen R,Lee RA,et al.Macintosh laryn-goscope blade for videolaryngoscopy reduces stylet use in pa-tients with normal airways[J].Anesth Analg,2009,109(3):825-831.
5Maassen R,Lee R,Hermans B,et al.A comparison of threevideolaryngoscopes:the Macintosh laryngoscope blade re-duces,but does not replace,routine stylet use for intubationin morbidly obese patients[J].Anesth Analg,2009,109(5):1560-1565.