Table 1

The modified Cormack-Lehane grading scale used to evaluate the laryngoscopic findings obtained in the present study

Laryngoscopic view
Grade

The anterior commissure of glottis is visible
I
More than 50% of glottis is visible; the anterior
IIa
commissure of glottis is not visible

Less than 50% of glottis is visible, including its
IIb
posterior commissure and the arytenoid cartilages

Only the arytenoid cartilages and the epiglottis are visible
IIIa
Only the epiglottis is visible
IIIb
Only the retropharyngeal wall is visible
IV

Mentzelopoulos et al. Critical Care 2000 4:40   doi:10.1186/cc648