Obstructive vs Restrictive Flashcards
What are some examples of obstructive lung disease?
- COPD
- Asthma
- Bronchiectasis
- CF
How is the FEV1 affected in someone with obstructive lung disease?
Reduced- less than 80% of normal
How is the FEV1:FVC ratio affected in someone with obstructive lung disease?
It is reduced- less than 70%
How is the total lung capacity affected in someone with obstructive lung disease?
It is increased
How is the total lung capacity increased in someone with obstructive lung disease?
Due to an increased residual capacity due to hyper-expansion
What part of the lung is affected in someone with obstructive lung disease?
Bronchi and bronchioles
What are some examples of restrictive lung disease?
- Pulmonary fibrosis
- Sarcoidosis
- Obesity
What is restrictive lung disease due to?
Disease in the interstitium of the lung
How are the FEV1 and FVC affected in someone with restrictive lung disease?
FEV1 and FVC are equally reduced
What is the problem with FEV1 and FVC being equally reduced in someone with restrictive lung disease?
You get a normal FEV1:FVC ratio
What might you see on a chest x-ray of someone with restrictive lung disease?
Increased density of the lung tissue
What pattern of lung disease can a person also present with?
Mixed-obstructive and restrictive
