Lung function tests

Question 1

FVC

Answer 1

Full Inspiration followed immediately by a full expiration at maximum speed

Question 2

VC

Answer 2

Full Inspiration followed immediately by a full expiration at relaxed speed

Question 3

FEV1

Answer 3

Volume of air that can be forced out in 1 second after full inspiration

Question 4

RV

Answer 4

The volume of air always left in the lungs, even after forcibly exhaling

Question 5

IRV

Answer 5

the difference between a normal and a maximal inspiration

Question 6

ERV

Answer 6

the difference between a normal and a maximal expiration

Question 7

Tidal volume (TV)

Answer 7

normal

Question 8

Tidal volume (TV)

Answer 8

normal volume of air inspired and expired during each ventilation cycle

Question 9

FRC

Answer 9

volume of air left in the lungs after a normal, passive exhalation (ERV + RV)

Question 10

How to differentiate obstructive and restrictive lung disease by FEV1/FVC

Answer 10

FEV1/FVC is reduced in obstructive (FEV1 reduced more than FVC)
FEV1/FVC is normal/raised in restrictive (FEV1 reduced proportional to FVC)

Question 11

a patients predicted normal range of values for lung function tests is based on which 4 factors

Answer 11

age, height, sex, race