Cardiopulm Lung Volumes/Capacities Flashcards
anatomic dead space (VD)
the volume of air that occupies the non-respiratory conducting airways
expiratory reserve volume (ERV)
the max volume of air that can be exhaled after a normal tidal exhalation
ERV is what % of total lung volume
15%
forced expiratory volume FEV
the max volume of air exhaled in a specific period of time
forced vital capacity FVC
the volume of air expired during a forced max expriation after a forced max inspiration
functional residual capacity FRC
the volume of air in the lungs after a normal exhalation
FRC is what percent of total lung volume
40%
FRC = what (equation)
FRC = ERV + RV
Inspiratory capactity IC
the max volume of air that ca nbe inspired after a normal titdal exhalation
IC is what percent of total lung volume
IC is 60% of total lung volume
IC =
IC = TV + IRV
IRV inspiratory reserve volme
the max volume of air that ca n be inspired after normal tidal volume inspriation
IRV is what percent of total lung volume
50%
minute volume ventilation
VE = TV x RR
the volume of air expired in one min
peak expiratory flow PEF
the max flow of air during the beginning of a forced expiratory maneuver
RV residual volume
the volume of gas in the lungs at the end of a max expiration. RV is 25% of total lung volume
TV tidal volume
volume inspired and expired with each breath during queit breathing. 10% of total lung volume
TLC total lung capactiy
volume of air in lungs after max inspiration. sum of all. TLC = RV + VC or
TLC = FRC + IC
VC vital capacity
volume change that occurs between max inspriation and max expriation.
VC =
VC = TV + IRV + ERV
VC what %
VC is 75% of total lung volume
