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Table 3 Intubation profiles compared between CMAC video-laryngoscope and McCoy laryngoscope according to each intubation step

From: Comparison of C-MAC D-blade videolaryngoscope and McCoy laryngoscope efficacy for nasotracheal intubation in simulated cervical spinal injury: a prospective randomized comparative study

CharacteristicsGroup C
(n = 48)
Group M
(n = 47)
P value
Nose to oropharynx
 Grade of difficulty  0.434
  143 (89.6)42 (89.4) 
  22 (4.2)4 (8.5) 
  33 (6.3)1 (2.1) 
 Time (S)9.6 ± 5.68.5 ± 2.60.563
Oropharynx to glottic inlet
 Grade of difficulty  < 0.001
  137 (77.1)12 (25.5) 
  211 (22.9)35 (74.5) 
 Time (S)13.0 ± 5.317.7 ± 7.70.004
Glottic inlet to trachea
 Grade of difficulty  0.002
  118 (37.5)5 (10.6) 
  230 (62.5)42 (89.4) 
 Time (S)16.8 ± 7.422.0 ± 11.40.027
Total intubation time (S)39.5 ± 11.448.1 ± 13.90.004
  1. Values are median ± SD or number of patients (%)