Table 1 Randomised controlled trials of Foley catheter vs. double balloon catheter.
| Lead author | Year | n | Foley catheter (F) | Double balloon catheter (DB) | Significant findings | |
|---|---|---|---|---|---|---|
| * published as abstract only | ||||||
| Pennell CE 12 | 2009 | 320 (nulliparae) | Filling vol.: 30 mlin situ time 12 h | 80 ml12 h or PGE2 vaginal gel | Induction to delivery time (h, median)F: 23.2DB: 24.5PGE2: 23.8 | p = 0.043 |
| Perceived as painful (pain score ≥ 4) (%)F: 36DB: 55PGE2: 63 | p < 0.001 | |||||
| Solt I 13 | 2009* | 200 | n/a | n/a | Caesarean section rate in nulliparae (%)F: 40DB: 20 | p = 0.02 |
| Balloon removal to delivery time (nulliparae) (h)F: 22.6DB: 14.6 | p = 0.05 | |||||
| Bishop score after balloon removal (nulliparae)F: 3.4 ± 2.0DB: 4.4 ± 1.9 | p = 0.02 | |||||
| Salim R 14 | 2011 | 293 | Filling vol.: 60 mlin situ time 12 h | 80 ml12 h | Rate of vacuum extraction or c-section (%)F: 14.4DB: 25.7 | p = 0.02 |
| Mei-Dan E 15 | 2012 | 188 | Filling vol.: 30 mlin situ time 12 h+ extraamniotic NaCl 50 ml/h | 80 ml12 h | Balloon insertion to expulsion time (h)F: 6.9 ± 4.2DB: 10.1 ± 4.7 | p = 0.001 |
| Induction to delivery time (h)F: 19.6 ± 11.4DB: 23.4 ± 15.5 | p = 0.03 | |||||
| Mei-Dan E 16 | 2014 | 186 | Filling vol.: 30 ml+ extraamniotic NaCl 50 ml/hin situ time 12 h | 80 ml+ extraamniotic NaCl 50 ml/h12 h | Caesarean section rate (%)F: 20DB: 8.3 | p = 0.05 |
| Induction to delivery time (h, median)F: 15.8DB: 14.3 | p = 0.04 | |||||