Journal article

LUNG GAS MIXING DURING EXPIRATION FOLLOWING AN INSPIRATION OF AIR

MR DAVIDSON

Bulletin of Mathematical Biology | SPRINGER | Published : 1975

Abstract

The airway system of the lung from the mouth to the pulmonary membrane is modelled by matching a cylindrical model of a pathway through the respiratory region of the lung onto a one-dimensional trumpet model for the conducting airways. The concentration of O2 in gas expired from this model airway system is investigated following an inspiration of air at two different flow rates (10 litres/min and 85 litres/min). In each case, expiration occurs at the same constant flow rate as that during the previous inspiration. The inspirations, which are studied in an earlier paper, are each of 2 sec duration and begin at a lung volume of 2300 ml and a lung oxygen tension of 98 mm Hg. The equations are s..

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University of Melbourne Researchers