Lung Function Tests Flashcards
1
Q
What are normal FEV1 and FVC ratios
A
Both FEV1 and FVC are normal and the FEV1 FVC ratio (FEV1/FVC) is >70%
2
Q
What does it mean if FEV1 and FVC are both reduced but the ratio is >70%
A
Restrictive condition
3
Q
What does it mean if FEV1 and FVC are both reduced but the ratio is
A
Obstructive condition
4
Q
What effect does a bronchodilator have on FEV1 valves of a person with asthma
A
Percentage improvement of >15% and at least 400ml increase
5
Q
What effect does a bronchodilator have on FEV1 valves of a person with COPD
A
Percentage improvement of
6
Q
What effect does a bronchodilator have on peak flow valves of a person with asthma
A
Increase of 25%
