19 - Spirometry and Disease Flashcards
(32 cards)
normal quiet breathing inspiration is ____ and expiration is ____
active, passive
normal healthy lungs have a ____ compliance and a ____ airway resistance
high compliance, low airway resistance
what is the resistance of airways determined by
the radius
in normal healthy lungs, the radius is large enough so that
resistance is very low
why does work of breathing increased with a reduced pulmonary compliance
more work required to expand the lungs in pulmonary fibrosis
what is the total lung capacity
5.7L
in a normal breath how much air moves in/out of lungs
500ml
end of expiration how much air in lungs
2,200ml
end of max expiration how much vol of airs in lungs
1200ml
lungs can never be maximally deflated because
gas exchange occurs continously, reduced WOB
factors that may affect lung volumes include
age, gender, anatomical build, smoking, fitness,
a spirogram is a
volume time curve
tv stands for
tidal volume
irv
inspiratory reserve volume
ic
inspiratory capacity
erv
expiratory reserve volume
rv
residual volume
frc
functional residual capacity
vc
vital capacity
tlc
total lung capacity
the residual volume does not move in or out of lungs cannot be measured by
spirometry
what can be used to measure RV
indirect measurement such as gas dilution technique
what does capacity mean
sum of two or more volumes
what is the tidal volume
volume of air entering leaving the lungs during single breath
