Table 1.
Characteristics of selected studies
| No | Study type | Author (year) | Location | Population (N) | Intervention group (N)/valve | Comparison (N) | Quality* |
|---|---|---|---|---|---|---|---|
| 1 | RCT | Herth et al (2012)7 | Europe | Emphysema (171) VENT | EBV for BLVR (111)/Zephyr® valve | Medical treatment (60) | 1+ |
| 2 | RCT | Sciurba et al (2010)8 | USA | Heterogeneous emphysema (321) VENT | EBV for BLVR (220)/Zephyr® valve | Medical treatment (101) | 1+ |
| 3 | RCT | Ninane et al (2012)12 | Europe | Emphysema (73) | EBV for BLVR (37)/IBV valve | Sham bronchoscopy (36) | 1+ |
| 4 | Retrospective cohort | Brown et al (2012)13 | USA | Emphysema (421) VENT | EBV for BLVR (289)/Zephyr® valve | Medical treatment (132) | 2+ |
| 5 | Case series | Venuta et al (2012)21 | Italy | Emphysema (40) | EBV for BLVR (40)/Zephyr® valve | 3 | |
| 6 | Case series | Santini et al (2011)20 | Italy | Emphysema (9) | EBV for BLVR (9)/Zephyr® valve | 3 | |
| 7 | Case series | D’Andrilli et al (2009)15 | Italy | Emphysema (7) | EBV for BLVR (7)/Zephyr® valve | 3 | |
| 8 | Case series | Hopkinson et al (2011)17 | UK | COPD patients underwent BLVR (19) | EBV for BLVR (19)/Emphasys® valve | 3 | |
| 9 | Case series | Kotecha et al (2011)19 | Australia | Emphysema (23) | EBV for BLVR (23)/Emphasys® valve | 3 | |
| 10 | Case series | Chung et al (2010)14 | Australia | COPD with emphysema (8) | EBV for BLVR (8)/Emphasys® valve | 3 | |
| 11 | Case series | de Oliveira et al (2006)16 | Brazil | Emphysema (19) | EBV for BLVR (19)/Emphasys® valve | 3 | |
| 12 | Case series | Wan et al (2006)23 | People’s Republic of China | Emphysema (98) | EBV for BLVR (98)/Emphasys® valve | 3 | |
| 13 | Case series | Hopkinson et al (2005)18 | UK | COPD with emphysema (19) | EBV for BLVR (19)/Emphasys® valve | 3 | |
| 14 | Case series | Venuta et al (2005)22 | Italy | Emphysema (13) | EBV for BLVR (13)/Emphasys® valve | 3 | |
| 15 | Case series | Yim et al (2004)24 | People’s Republic of China | Emphysema underwent BLVR (20) | EBV for BLVR (20)/Emphasys® valve | 3 |
Note:
*
Scottish Intercollegiate Guidelines Network criteria were used for quality assessment of literature.9
Abbreviations: RCT, randomized controlled trial; VENT, Endobronchial Valve for Emphysema Palliation Trial; EBV, endobronchial valve; BLVR, bronchoscopic lung volume reduction; COPD, chronic obstructive pulmonary disease.