| CV- | CV+ | |||||
| All | Responders | Nonresponders | All | Nonresponders | Responders | |
| Subjects n | 51 | 36 | 15 | 29 | 24 | 5 |
| TLVR % | 55.7 (18.0–92.4) | 72.1 (49.8–98.7) | 6.4 (2.0–13.5) | 5.7 (1.6–16.0) | 3.75 (0.3–8.7) | 99.2 (40.8–99.6) |
| TLVR mL | 752.7 (218.2–1,270) | 1061.4 (736.2–1882.2) | 132.5 (38.6–187.6) | 98.6 (26.8–232.1) | 62.2 (3.9–166.2) | 1603.8 (837.1–2216.9) |
| FEV1 | ||||||
| Pre-operative L | 0.87±0.36 | 0.87±0.35 | 0.88±0.39 | 0.82±0.32 | 0.79±0.33 | 1.00±0.27 |
| Post-operative L | 1.01±0.45 | 1.07±0.46 | 0.89±0.40 | 0.83±0.34 | 0.75±0.27 | 1.23±0.36 |
| Absolute change | 0.14±0.20 | 0.19±0.21 | 0.01±0.07 | 0.01±0.21 | −0.04±0.19 | 0.23±0.12 |
| Percentage change | 16±22 | 23±24 | 2±8 | 1±15 | −3±12 | 23±10 |
| Reached MCID | 22 (43) | 21 (58) | 1 (7) | 6 (21) | 2 (8) | 4 (80) |
| 6MWT# | ||||||
| Pre-operative m | 327±117 | 324±108 | 335±140 | 298±97 | 299±102 | 291±84 |
| Post-operative m | 353±111 | 358±106 | 342±125 | 307±92 | 304±87 | 322±120 |
| Difference m | 24±57 | 31±56 | 7±56 | 10±57 | 5±56 | 32±65 |
| Reached MCID | 22 (45) | 18(53) | 4 (27) | 12 (44) | 9 (41) | 3 (60) |
| SGRQ¶ | ||||||
| Pre-operative points | 63±12 | 64±12 | 60±11 | 63±13 | 63±13 | 64±13 |
| Post-operative points | 51±18 | 48±19 | 57±15 | 58±18 | 58±16 | 59±27 |
| Difference points | −10±13 | −13±14 | −2±8 | −5±15 | −4±15 | −12±19 |
| Reached MCID | 25(68) | 19 (73) | 6 (54) | 11 (50) | 9 (50) | 2 (67) |
| Other | ||||||
| Total lung capacity L | 7.39±1.67 | 7.24±1.68 | 7.73±1.65 | 7.56±1.41 | 7.76±1.37 | 6.61±1.33 |
| Residual volume | 4.49±1.22 | 4.29±1.18 | 4.97±1.19 | 4.93±1.53 | 5.28±1.44 | 3.25±0.41 |
Data are presented as median (interquartile range), mean±sd or n (%), unless otherwise stated. CV-: collateral ventilation absent; CV+: collateral ventilation present; TLVR: target lobe volume reduction; FEV1: forced expiratory volume in 1 s; MCID: minimal clinically important difference; 6MWT: 6-min walking test; SGRQ: St. George′s Respiratory Questionnaire. MCID is defined as an improvement of ≥15% in FEV1, an improvement of ≥26 m in the 6MWT and an improvement (i.e. decrease) of ≥4 points on the SGRQ. #: CV-all (n=49); CV-responders (n=34); CV-nonresponders (n=15); CV+all (n=27); CV+nonresponders (n=22); CV+responders (n=5). ¶: CV-all (n=37); CV-responders (n=26); CV-nonresponders (n=11); CV+all (n=21); CV+nonresponders (n=18); CV+responders (n=3).