2030434-002 Rev. B
10.2 GOLD/Hardie System Interpretation
START
Maneuver
Quality
OK?
FEV1/FVC limit age related:
age < 70 years: 70%
70 <= age < 80: 65%
age > 80 years: 60%
FEV1/FVC
< FEV1%
limit
FEV1
>= 80%
Predicted
FEV1
>= 50%
Predicted
FEV1
>= 30%
Predicted
FVC
<
LLN A ND
NO
FEV1 <
LLN
NO
Smoker?
YES
YES
YES
YES
NO
No Interpretation,
no acceptable
trial
Normal
NO
Spirometry
Normal
YES
Spirometry; At
C OPD risk
Restriction
probable;
Further
examinations
recommended
Mild Obstruction
Moderate
Obstruction
Severe
Obstruction
Very Severe
Obstruction
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