Table 2 Upper airway dimensions in millimeters at rest and during Muller’s maneuver in both lateral and frontal views

Lateral view

Soft palatal length

14.4

56.5

34.1 ± 10.77

Distance between soft palate and posterior pharyngeal wall

Rest

4

14.2

9.89 ± 2.82

Muller’s maneuver

0

11.3

2.75 ± 2.75

Distance between tongue base and posterior pharyngeal wall

Rest

4.7

19

10.63 ± 3.71

Muller’s maneuver

1.4

13.4

4.73 ± 3.19

Distance between tip of epiglottis and posterior pharyngeal wall

Rest

6

26

12.1 ± 5.21

Muller’s maneuver

1

14.9

6.44 ± 3.71

Frontal view

Distance between lateral pharyngeal walls at maximum collapse

Rest

13.5

35

17.3 ± 4.32

Muller’s maneuver

6.4

22

11.29 ± 3.89