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Table 2 Comparison of direct laryngoscopy (DL) and C-MAC4 with Miller technique (C-MAC4/SBT) views in patients with sub-optimal conventional laryngoscopic view (C/L≥2a).

From: A randomised, controlled crossover comparison of the C-MAC videolaryngoscope with direct laryngoscopy in 150 patients during routine induction of anaesthesia

 

C-MAC4/SBT views

DL views

C/L I

C/L IIa

C/L IIb

C/L III

C/L IV

C/L IIa, n = 11

5

5

1

0

0

C/L IIb, n = 5

1

2

2

0

0

C/L III, n = 5

2

1

1

1

0

C/L IV, n = 3

0

3

0

0

0

Totals n = 24

8

11

4

1

0

  1. Data are given as absolute numbers. C/L indicates Cormack and Lehane view,[13] modified by Yentis and Lee;[14]DL: Direct laryngoscopy.