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Table 1 Comparison of Published Viscosities of Airway Surface Liquid

From: Determination of rheology and surface tension of airway surface liquid: a review of clinical relevance and measurement techniques

Reference

Viscosity (cP)

Device

Technique

Human (recurrent bronchitis) (Puchelle et al. 1981) [26]

2.48 × 104

Concentric cylinder rheometer

Shear deformation at a shear rate of 0.3 s−1

Human (mild chronic bronchitis) (Puchelle et al. 1981) [26]

1.14 × 104

Concentric cylinder rheometer

Human (severe chronic bronchitis) (Puchelle et al. 1981) [26]

1.25 × 104

Concentric cylinder rheometer

Human (Baconnais et al. 1999) [27]

200

Cone and plate rheometer

Creep-test under a constant stress of 10 Pa

Human (CF) (Baconnais et al. 1999) [27]

600

Cone and plate rheometer

Human (Jeanneret-Grosjean et al.1988) [16]

(1.2~1.5) × 104

Magnetic microrheometer

Oscillating a steel microsphere at 1 and 100 rad/s

Human (CF) (Dawson et al. 2003) [28]

~ 7 × 104

Cone and plate rheometer

Shear deformation at a shear rate of

10− 2~102 rad/s

Human (CF) (Feather et al. 1970) [29]

21~134

Cone and plate rheometer

Shear deformation at a shear rate of 900 s−1

Human (chronic bronchitis) (Feather et al. 1970) [29]

117~144

Cone and plate rheometer

Human (bronchiectasis) (Feather et al. 1970) [29]

58

Cone and plate rheometer

Human (ARDS) (author’s labs)

0.97~ 7.76 × 104

Cone and plate rheometer

Shear deformation at a shear rate of

10− 2~10 rad/s

  1. cP: centipoise, 1 cP = 0.001 Pa·s, CF: Cystic fibrosis