Pulmonary Function Tests

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What's TLCO?
transfer factor for carbon monoxide
1 of 10
What's KCO?
rate of uptake for carbon monoxide
2 of 10
What range of Z scores includes the upper and lower limits of normal?
-1.64 to +1.64
3 of 10
What is the typical spirometry for an obstructive abnormality?
normal FVC, reduced FEV1, reduced FEV1/FVC (less than 0.7). Flow-volume curve usually concave
4 of 10
What is the typical spirometry for a restrictive abnormality?
Reduced TLC, reduced FVC, reduced FEV1, normal or increased FEV1/FVC. Flow-volume curve usually convex
5 of 10
What PFTs characterise mixed abnormalities?
FEV1/FVC and TLC both reduced
6 of 10
Severity classifications by FEV1
Mild >70
Moderate 60-69
Moderately severe 50-59
Severe 35-49
Very severe < 35
7 of 10
Severity classification for decrease in transfer factor
Mild >60% and <LLN
Moderate 40-60%
Severe <40%
8 of 10
What FEV1 change indicates positive bronchodilator response?
>12% and >200mL increase
9 of 10
What FEV1 change in COPD patients indicates that the patient should be treated for asthma?
FEV1 increase >400mL
10 of 10

Other cards in this set

Card 2

Front

What's KCO?

Back

rate of uptake for carbon monoxide

Card 3

Front

What range of Z scores includes the upper and lower limits of normal?

Back

Preview of the front of card 3

Card 4

Front

What is the typical spirometry for an obstructive abnormality?

Back

Preview of the front of card 4

Card 5

Front

What is the typical spirometry for a restrictive abnormality?

Back

Preview of the front of card 5
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