| Volume x Fraction = Mass of Gas |
|
|
| Mass
of Gas of VT = sum of gas masses |
|
| of VA and VD |
|
| VD |
| VT |
| VT x FECO2 = VA x FACO2 +
VD X FDCO2 |
| VA |
| Since FDCO2 = 0 |
| VA = (VT x FECO2) / ( FACO2) |
| Since VA = VT - VD |
| (FACO2 - FECO2) |
| VD = |
| VT |
| FACO2 |
