Table 6.
Preterm Delivery at or before 34 Weeks 0 Days by Risk Factor
| Factors | Delivery ≤ 34w 0d N=38 | Delivery > 34w 0d N=51 | p-value |
|---|---|---|---|
|
| |||
| Maternal age (yrs) | 28.3 ± 5.3 | 30.0 ± 5.1 | 0.10 |
|
| |||
| Body mass index (kg/m2) | 26.8 ± 4.0 | 25.8 ± 3.5 | 0.18 |
|
| |||
| Parity | 0.78 | ||
| Nulliparous | 16/36 (44.4) | 20/36 (55.6) | |
| Multiparous | 22/53 (41.5) | 31/53 (58.5) | |
|
| |||
| Previous cesarean delivery | 0.48 | ||
| Yes | 4/12 (33.3) | 8/12 (66.7) | |
| No | 34/77 (44.2) | 43/77 (55.8) | |
|
| |||
| Pre-operative cervical length (mm) | 39.9 ± 7.5 | 39.3 ± 7.7 | 0.67 |
|
| |||
| Gestational age at surgery (wks) | 23.9 ± 1.3 | 24.0 ± 1.5 | 0.69 |
|
| |||
| Gestational age at surgery | 0.31 | ||
| < 24 weeks | 19/39 (48.7) | 20/39 (51.3) | |
| ≥ 24 weeks | 19/50 (38.0) | 31/50 (62.0) | |
|
| |||
| Hysterotomy location | 0.31 | ||
| Posterior/fundal | 22/46 (47.8) | 24/46 (52.2) | |
| Anterior | 16/43 (37.2) | 27/43 (62.8) | |
|
| |||
| Total duration of surgery (min) | 112.2 ± 26.4 | 99.6 ± 21.9 | 0.02 |
|
| |||
| Duration uterine surgery (min) | 66.1 ± 24 | 55.2 ± 20.1 | 0.03 |
|
| |||
| Time on MgSO4 tocolysis (hrs) | 21.6 ± 3.2 | 22.7 ± 3.25 | 0.21 |
|
| |||
| Oligohydramnios before PPROM | <0.001 | ||
| Yes | 14/17 (82.4) | 3/17 (17.7) | |
| No | 24/72 (33.3) | 48/72 (66.7) | |
|
| |||
| Membrane separation before PPROM | 0.08 | ||
| Yes | 12/20 (60.0) | 8/20 (40.0) | |
| No | 26/69 (37.6) | 43/69 (62.3) | |
Data presented as n (%) or mean ± SD