From: A single-centre, randomised controlled feasibility pilot trial comparing performance of direct laryngoscopy versus videolaryngoscopy for endotracheal intubation in surgical patients
Score = 1
Score = 2
Score = 3
Thyromental distance (cm)
> 6
5–6
< 5
Mallampati Score
I
II
III & IV
Mouth opening (cm)
> 4
2–3
< 1
Neck mobility
Normal
Reduced
Fixed flexion
Upper incisors
Absent
Prominent