Tests

Question 1

What is a normal value for breathing rate?

Answer 1

12-20 berths per minute

Question 2

What is a normal value for tidal volume?

Answer 2

500ml

Question 3

After what age does FEV1 decrease?

Answer 3

30 years. This is accelerated with COPD.

Question 4

What is lung capacity?

Answer 4

In the healthy state, the amount of gas (or air) that can be accommodated will depend of the size of the lungs and thorax, which is related to the age, sex, height and ethnicity of the individual. This is referred to as lung capacity.

Question 5

What is the difference between reversibility in COPD and asthma?

Answer 5

In COPD, the airways constriction is irreversible, or nearly irreversible. There would be <15%, or <200 mL/s, improvement in FEV1 and PEFR after salbutamol.
In asthma, the airways constriction is reversible so that the FEV1 and PEFR would be restored to normal after salbutamol.