| Patient | Target lobe | FEV1 % pred# | FEV1 % pred¶ | ΔFEV1 % |
| 1 | RUL | 56 | 67 | 11 |
| 2 | RUL | 71 | 78 | 7 |
| 3 | Apex RLL | 60 | 61 | 1 |
| 5 | RUL | 48 | 53 | 5 |
| 6 | Apex RLL | 67 | 75 | 8 |
| 7 | RLL | 47 | 60 | 13 |
| 8 | LLL | 56 | 70 | 14 |
| 9 | LLL | 49 | 58 | 9 |
| 10 | RLL | 19 | 28 | 9 |
FEV1: forced expiratory volume in 1 s; Δ: change; RUL: right upper lobe; RLL: right lower lobe; LLL: left lower lobe. #: spirometry performed before valve removal (on the day of valve removal, before the procedure); ¶: spirometry performed within a week after valve removal.