PFT lab video

Question 1

True or false: the patient’s PFT % of predicted should change as they age

Answer 1

False- They’re lung volumes will change, but the % compared to predicted will not

Question 2

By what age does the american thoracic society recommend baseline spirometry be done? How frequently after that?

Answer 2

20, then every 10 years after that until 50 yo, when it becomes every 5 years

(i.e. 20, 30, 40, 50, 55, 60, 65 etc)

Question 3

Is spirometry testing down standing or sitting?

Answer 3

Either but standing is preferable

Question 4

If a patient is sitting for the spirometry test, what must they do?

Answer 4

Sit straight, with both feet on the floor

Question 5

What are the first three measurements taken in spirometry?

Answer 5

1. Two tidal volumes
2. Maximal inhalation
3. Maximal exhalation

Question 6

What happens to the inspiration phase in pts with asthma?

Answer 6

Relatively normal

Question 7

What happens to the expiration phase in pts with asthma?

Answer 7

Flows much faster out

Question 8

What happens to the FEV1/FVC in pts with asthma?

Answer 8

Decreased

Question 9

What happens to the FEV3/FVC in pts with asthma?

Answer 9

Decreased, but not by as much as

Question 10

What happens to the FEF25, 50, and 75 in pts with asthma?

Answer 10

SUBSTANTIALLY reduced

Question 11

What is albuterol (what is the receptor that is acts on, and what does it do)?

Answer 11

Beta-2 receptor agonist

Question 12

What happens to the inspiration phase of the flow/volume curve after a pt with asthma uses their inhaler?

Answer 12

Not much, still fairly normal

Question 13

What happens to the expiration phase of the flow/volume curve after a pt with asthma uses their inhaler?

Answer 13

Less concavity of the phase

Question 14

What does the downward slope of the exploratory phase of the flow/volume curve represent in terms of what the air in the lungs is flowing through?

Answer 14

The air is flowing through the smaller airways