Pulmonary function tests Flashcards
1
Q
Obstructive picture on spirometry
A
FEV1 = sig reduced
FVC = normal or reduced
FEV1/FVC = reduced (<70%/0.7)
2
Q
Restrictive picture on spirometry
A
FEV1 = reduced
FVC = sig reduced
FEV1/FVC = Increased (>70%/0.7)
3
Q
Causes of obstructive picture
A
COPD
Asthma
Bronchiectasis
4
Q
Causes of restrictive picture
A
PF
Asbestosis
ARDD
Sarcoidosis
Ank spond(kyphoscoliosis)
Neuromuscular disorders
Severe obesity
5
Q
Define FEV1
A
Air a person can forcefully exhale in one second.
6
Q
Define FVC
A
total air a person can exhale after full inhlalation
7
Q
What is peak flow
A
- Measures the fastest p[oint of expiratpry flow of air
- Helps gauge severity of acute obstructive disease
8
Q
A
