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. 2020 May 14;20:114. doi: 10.1186/s12871-020-01021-x

Table 3.

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

Characteristics Group C
(n = 48)
Group M
(n = 47)
P value
Nose to oropharynx
 Grade of difficulty 0.434
  1 43 (89.6) 42 (89.4)
  2 2 (4.2) 4 (8.5)
  3 3 (6.3) 1 (2.1)
 Time (S) 9.6 ± 5.6 8.5 ± 2.6 0.563
Oropharynx to glottic inlet
 Grade of difficulty < 0.001
  1 37 (77.1) 12 (25.5)
  2 11 (22.9) 35 (74.5)
 Time (S) 13.0 ± 5.3 17.7 ± 7.7 0.004
Glottic inlet to trachea
 Grade of difficulty 0.002
  1 18 (37.5) 5 (10.6)
  2 30 (62.5) 42 (89.4)
 Time (S) 16.8 ± 7.4 22.0 ± 11.4 0.027
Total intubation time (S) 39.5 ± 11.4 48.1 ± 13.9 0.004

Values are median ± SD or number of patients (%)