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Flashcards in PFT lab video Deck (14):
1

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

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

2

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

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)

3

Is spirometry testing down standing or sitting?

Either but standing is preferable

4

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

Sit straight, with both feet on the floor

5

What are the first three measurements taken in spirometry?

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

6

What happens to the inspiration phase in pts with asthma?

Relatively normal

7

What happens to the expiration phase in pts with asthma?

Flows much faster out

8

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

Decreased

9

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

Decreased, but not by as much as

10

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

SUBSTANTIALLY reduced

11

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

Beta-2 receptor agonist

12

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

Not much, still fairly normal

13

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

Less concavity of the phase

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?

The air is flowing through the smaller airways