Sputum viscosity in cystic fibrosis of the pancreas and other pulmonary diseases

EA Feather, G Russell - British Journal of Diseases of the Chest, 1970 - Elsevier
Studies of sputum viscosity from patients with cystic fibrosis and other diseases showed that
in cystic fibrosis mucoid sputum was less viscous than that produced by patients with other
respiratory diseases. Unlike bronchitic sputum, the viscosity of cystic fibrosis sputum
increased markedly with purulence. Evidence is discussed to suggest that factors in addition
to sputum viscosity may be of importance in initiating pulmonary disease in cystic fibrosis.