Table 1.

Criteria for insertion of EBVs in the author’s unit.

FEV1	<50% of Expected values
RV	>170% of Expected values
Modified MRC Breathlessness Score	>2
COPD Assessment Test score	>15
Pulmonary artery pressure	<50 mm Hg
Stopped smoking
Undergone pulmonary rehabilitation programme
No major co-morbid conditions

EBVs: endobronchial valves; RV: residual volume; MRC: Medical Research Council; COPD: chronic obstructive pulmonary disease.