The kinetics of alveolar-capillary CO 2 transfer was investigated, using 18 O-labeled carbon
dioxide (C 16 O 18 O), in 21 experiments on 2 resting human subjects. Single-breath …

A major difficulty in the measurement of carbon dioxide diffusing capacity is the development
of significant CO 2 back pressure within the capillary. The use of oxygen-labeled CO 2 limits …

Blood/gas equilibrium of CO 2 in lungs was studied in man by a rebreathing technique, in
which the rate of uptake of the stable isotope 13 CO 2 in low concentration (inspired …

Carbon dioxide labeled with oxygen 15 has been used to measure regional blood flow in
the lung by counting over the chest during a short breath-holding period following a single …

The rate of uptake of carbon monoxide (CO) in the lungs of normal subjects were measured
at inspired concentrations of less than 1, 300, and 3,000 ppm (less than 0.0001–0.3%) using …

1. Ventilation, which is the mechanism by which the alveolar gas is intermittently freshed
with ambient air. As a result the O2 concentration in the alveolar gas remains high, and the …

The dynamics of CO2 exchange in the lungs of man was studied by observing the rate of
disappearance of a stable isotope of CO2 (13CO2) from the alveolar gas during breath …

Heller, Hartmut, Gabi Fuchs, and Klaus-Dieter Schuster. Pulmonary diffusing capacities for
oxygen-labeled CO2 and nitric oxide in rabbits. J. Appl. Physiol. 84 (2): 606–611, 1998 …

Steady-state diffusing capacity of the lungs for carbon monoxide (DLCO) was measured in
13 anesthetized, paralyzed dogs ventilated at constant tidal volume and rate, using four …

It is generally held that diffusional equilibration of CO 2 is much faster than that of O 2 as
Krogh's diffusion constant is about 20 times higher for CO 2 than for O 2. Hence, since in …