Obstruction And Restriction

Question 1

FEV1 definition =

Answer 1

forced expiratory volume in one second in litres.

Good overall assessment of lung health

80% of greater of predicted is normal

Question 2

What Is FVC =

What does it indicate if low?

Answer 2

Forced vital capacity

A low FVC value of less than 80% of the predicted is likely airways restriction

Question 3

What is an abnormal FVC ratio and hat does it show?

Answer 3

Abnormal ratio < 0.7 ad it shows airways obstruction

FVC1/FVC

Question 4

See formative assessment lecture

Answer 4

Well done

Question 5

What is peak flow and how does it vary with asthma?

Answer 5

The peak flow test measures how fast you can breathe out after you’ve taken a full breath in. Your peak flow score is sometimes called your peak expiratory flow (PEF).

When condition worse - narrower airways and therefore a lower peak flow, variable though by about 20%.

Normal variation no more than 8%

Question 6

What diseases can cause a low DLco?

What else is it typified by?

Answer 6

COPD

Airways obstruction low ratio

And also a lack of PEF variation

And poor response to treatment

Question 7

What if you have a low FEV1/FVC ratio and a low FVC compared to redacted?

Answer 7

Obstruction and restriction