Pulmonary function tests Flashcards
(10 cards)
1
Q
FVC
A
forced vital capacity
2
Q
FEV1
A
forced expired volume in 1sec
3
Q
PEF
A
peak expiratory flow
4
Q
FEV1/FVC
A
FEV1 as a fraction of FVC
5
Q
FEF 25-75
A
forced expired flow between 25-75% of the expired volume
6
Q
High lung compliance Difficult to exhale Low FEV1 Low FEV1/FVC ratio High TLC
A
obstructive lung disease = COPD, asthma
7
Q
Low lung compliance Difficult to inhale Low FEV1 Normal FEV1/FVC ratio Normal to low TLC
A
restrictive lung disease = interstitial lung disease
8
Q
FEV1 and FVC in COPD
A
both are decreased
9
Q
How do we measure the volume of air in the lungs that does not communicate with the outside air?
A
Body plethysmography
10
Q
FRC measured by
A
He dilution
-does not measure volume of lungs in blebs
