lung function tests

Question 1

FEV1

Answer 1

forced expiratory volume in 1s

Question 2

when is FEV1 reduced

Answer 2

obstruction to air flow out of lungs

Question 3

FVC

Answer 3

forced vital capacity

amount of air can exhale after full inhalation

Question 4

when is FVC reduced

Answer 4

restriction of capacity of lungs

Question 5

obstructive lung disease

Answer 5

FEV1 is reduced

FEV1/FVC < 75%

may have good lung volume but air moves slowly due to obstruction

Question 6

examples obstructive lung disease

Answer 6

asthma

COPD

Question 7

restrictive lung diseas

Answer 7

FEV1 and FVC equally reduced

FEV1/FVC > 75%

restriction to lungs ability to expand and take air in

Question 8

causes of restrictive lung disease

Answer 8

intersitial lung disease
neurological e.g. MDN
scoliosis/chest deformity
obesity