FEV1 <30% predicted |
Oxygen dependence |
One or more hospital admissions in the previous year for an acute exacerbation of COPD |
Left heart failure or other comorbidities |
Weight loss or cachexia |
Decreased functional status |
Increasing dependence on others |
Age >70 yrs |
FEV1: forced expiratory volume in one second; COPD: chronic obstructive pulmonary disease.