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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.