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Fig. 2.
Schematic detailing analysis of exhalation profiles for concentration
and flow rate. Average concentrations and flow rates were estimated for
exhaled volume and exhaled time by use of interval of 20-60% of
vital capacity (VC) or 2-8 s, respectively. Phase III slope was
calculated using linear least squares over this same interval and then
normalized by average value over interval.
E, exhalation
flow rate;
CCO2 and
CNO,
CO2 and NO concentration,
respectively;
E,
CO2,
and NO,
average
E,
CCO2, and
CNO, respectively;
,
SIII,CO2,
and SIII,NO,
phase III slopes for NO, CO2, and
E, respectively.
