FO2 insp. and FO2 pre-insp.
measurements
For all experimental conditions, the actual oxygen concentrations of
FO2 insp. and FO2 pre-insp. with
different lung conditions from our spontaneous breathing lung model are
shown in Table 1. The data indicate that FO2 pre-insp.
was higher than FO2 insp. under different conditions.
With the same VT as normal lung mechanics, the measured
FO2 insp. and
FO2 pre-insp. decreased as the f increased. However, at
the same f, a smaller FO2 insp. and FO2pre-insp. were recorded when a larger VT was present.
The same outcomes were reported in the restricted and obstructed lung
models.