Spirometry
https://www.youtube.com/watch?v=YwcNbVnHNAo
Pulmonary function tests can be used to determine whether a respiratory disease is obstructive or restrictive. The table below summarises the main findings and gives some example conditions:
| Obstructive lung disease | Restrictive lung disease |
|---|---|
| FEV1 - significantly reducedFVC - reduced or normalFEV1% (FEV1/FVC) - reduced | FEV1 - reduced |
| FVC - significantly reduced | |
| FEV1% (FEV1/FVC) - normal or increased | |
| Asthma | |
| COPD | |
| Bronchiectasis | |
| Bronchiolitis obliterans | Pulmonary fibrosis |
| Asbestosis | |
| Sarcoidosis | |
| Acute respiratory distress syndrome | |
| Infant respiratory distress syndrome | |
| Kyphoscoliosis e.g. ankylosing spondylitis | |
| Neuromuscular disorders | |
| Severe obesity |