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FEV1/FVC < 70%
FEV1/FVC < 70% and FVC normal, then no significant improvement after bronchodilator
FEV1/FVC < 70% and FVC normal, then FEV1 or FVC increased by 15% or FEF-25-75 increased by 30% after bronchodilator
FEV1/FVC is < 70% and FVC < 80%, and TLC < 80% predicted?
obstructive and restrictive disease
FEV1/FVC is < 70% and FVC < 80%, and TLC > 120% predicted?
FEV1/FVC is < 70% and FVC < 80%, and TLC normal with increased RV?
air trapping, obstructive disease
Obstructive with hyperinflation and decreased DLCO?
Obstruction with hyperinflation and normal ( or sometimes increased ) DLCO
Obstruction with normal lung volumes and normal DLCO
Restriction with low RV and decreased DLCO?
scarring diseases (sarcoidosis, diffuse interstitial fibrosis, berryliosis, collagen vascular disease)
Restriction with normal RV (or increased) and normal DLCO?
- Neuromuscular diseases
Isolated low DLCO?
- Pulmonary vascular disease (PE)
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