Table 2. Conditions Studied in the Simulations of Tracer Washout with the Two- and Four-compartment Models and Derived Specific Ventilation of the Tracer-containing Compartment (A or A1) Computed from the Three First Points of the Washout Curve
fv= fraction of ventilation to compartment A or A1; VD= volume of common dead space; VDA= VDB= volume of regional dead space; VT= tidal volume; FBo= initial concentrations in compartment B and A2; sV̇a = derived specific ventilation; 2-C = two-compartment model; V̇/V = ventilation/volume; 4-C = four-compartment model; α= fraction of FRC to compartment A or A1 = 0.35; FAoand FA1o= initial concentrations in compartments A and A1 = 1.