lung function tests Flashcards
1
Q
FEV1
A
forced expiratory volume in 1s
2
Q
when is FEV1 reduced
A
obstruction to air flow out of lungs
3
Q
FVC
A
forced vital capacity
amount of air can exhale after full inhalation
4
Q
when is FVC reduced
A
restriction of capacity of lungs
5
Q
obstructive lung disease
A
FEV1 is reduced
FEV1/FVC < 75%
may have good lung volume but air moves slowly due to obstruction
6
Q
examples obstructive lung disease
A
asthma
COPD
7
Q
restrictive lung diseas
A
FEV1 and FVC equally reduced
FEV1/FVC > 75%
restriction to lungs ability to expand and take air in
8
Q
causes of restrictive lung disease
A
intersitial lung disease
neurological e.g. MDN
scoliosis/chest deformity
obesity
