Table 2 Geometrical factors for the six patients analyzed (with and without MAD). LP: pharyngeal length, τ the hypothetical pharyngeal straight length, ε: tortuosity index, β:asymmetry factor, Amin: Minimum area, A inlet: Inlet Area, A outlet: Outlet Area and γ.

From: Physiological and geometrical effects in the upper airways with and without mandibular advance device for sleep apnea treatment

 

Volume (mm3)

Ainlet (mm)

AOutlet (mm)

Amin (mm)

τ (mm)

LP (mm)

Tortuosity (ε)

% Stenosis

β (mm)

γ

P1

11774.00

257.57

389.21

38.46

71.91

73.69

1.02

0.85

4.98

1.01

P1_MAD

21498.00

327.87

623.29

81.84

77.10

80.18

1.04

0.75

5.02

P2

12043.00

193.90

380.91

71.39

68.47

73.76

1.08

0.63

3.42

0.96

P2_MAD

14397.00

285.73

199.25

156.87

67.14

69.66

1.04

0.45

2.65

P3

13413.00

236.43

448.50

95.83

70.44

74.45

1.06

0.59

1.05

1.01

P3_MAD

19868.00

303.63

422.93

157.19

76.72

82.07

1.07

0.48

0.75

P4

11937.60

203.48

430.28

100.83

66.76

71.52

1.07

0.45

0.36

0.98

P4_MAD

12046.00

223.85

412.65

101.29

63.50

66.92

1.05

0.55

0.40

P5

15118.00

192.75

260.51

138.44

73.16

75.12

1.03

0.28

2.31

1.01

P5_MAD

30531.00

310.21

538.31

239.75

77.74

80.88

1.04

0.23

2.40

P6

17883.00

227.81

350.78

165.82

71.80

72.75

1.01

0.27

0.93

1.00

P6_MAD

23698.00

276.00

405.37

253.81

80.27

81.28

1.01

0.08

1.60