Flashcards in PFT lab video Deck (14):
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
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)
Is spirometry testing down standing or sitting?
Either but standing is preferable
If a patient is sitting for the spirometry test, what must they do?
Sit straight, with both feet on the floor
What are the first three measurements taken in spirometry?
1. Two tidal volumes
2. Maximal inhalation
3. Maximal exhalation
What happens to the inspiration phase in pts with asthma?
What happens to the expiration phase in pts with asthma?
Flows much faster out
What happens to the FEV1/FVC in pts with asthma?
What happens to the FEV3/FVC in pts with asthma?
Decreased, but not by as much as
What happens to the FEF25, 50, and 75 in pts with asthma?
What is albuterol (what is the receptor that is acts on, and what does it do)?
Beta-2 receptor agonist
What happens to the inspiration phase of the flow/volume curve after a pt with asthma uses their inhaler?
Not much, still fairly normal
What happens to the expiration phase of the flow/volume curve after a pt with asthma uses their inhaler?
Less concavity of the phase