Age <75 yrs | Age <65 yrs |
FEV1 >20% to <45% pred | FEV1 <25% pred |
DL,CO >20% pred | DL,CO <20% pred |
RV >200 % pred | Pa,O2 <55 mmHg |
Pa,CO2 <55 mmHg | Pa,CO2 >55 mmHg |
Ppa <45 mmHg | Pulmonary hypertension/cor pulmonale |
Heterogeneous emphysema | All types emphysema including α1-ATD |
Upper lobe | Whole lung |
Limited exercise capacity | Limited exercise capacity |