Table 5
AbbreviationDescriptionUnit
aoAirway opening
awAirway
bsBody surface
esOesophageal
f FrequencyHz
f res Resonant frequencyHz
FRCFunction residual capacityL
G (/Conductance 1R)·LkPa−1·s−1
Gaw(/Airway conductance 1Raw)·LkPa−1·s−1
Grs(/Total respiratory conductance 1Rrs)·LkPa−1·s−1
sGaw(=Specific airway conductance G/)awFRCkPa−1·s−1
inInput
LPulmonary system
P PressurekPa
R Real part of Z or resistance··kPasL−1
rsRespiratory system
R aw Airway resistance measured by body plethysmography··kPasL−1
sRaw(/Specific airway resistance 1sGaw)·kPas
R rs f Total respiratory resistance measured at frequency f
tiTissue
trTransfer
V'Airflow·Ls−1
wChest wall
X Imaginary part of Z or reactance··kPasL−1
Z Impedance··kPasL−1