Table 5.
Spontaneous Rupture of the Membranes (SROM) at any Gestational Age by Risk Factor
| Factors | SROM N = 40 | No SROM N = 49 | p-value |
|---|---|---|---|
|
| |||
| Maternal age (yrs) | 30.3 ± 5.6 | 28.5 ± 4.8 | 0.13 |
|
| |||
| Body mass index (kg/m2) | 26.5 ± 3.7 | 26.0 ± 3.7 | 0.58 |
|
| |||
| Parity | 0.07 | ||
| Nulliparous | 12/36 (33.3) | 24/36 (66.7) | |
| Multiparous | 28/53 (52.3) | 25/53 (47.7) | |
|
| |||
| Previous cesarean delivery | 0.81 | ||
| Yes | 5/12 (41.7) | 7/12 (58.3) | |
| No | 35/77 (45.4) | 42/77 (54.6) | |
|
| |||
| Pre-operative cervical length (mm) | 39.4 ± 8.1 | 39.7 ± 7.3 | 0.75 |
|
| |||
| Gestational age at surgery (wks) | 23.5 ± 1.5 | 24.3 ± 1.2 | 0.02 |
|
| |||
| Gestational age at surgery | 0.02 | ||
| < 24 weeks | 23/39 (59.0) | 16/39 (41.0) | |
| ≥ 24 weeks | 17/50 (34.0) | 33/50 (66.0) | |
|
| |||
| Hysterotomy location | 0.12 | ||
| Posterior/fundal | 17/46 (37.0) | 29/46 (63.0) | |
| Anterior | 23/43 (53.5) | 20/43 (46.5) | |
|
| |||
| Total duration of surgery (min) | 112.0 ± 26.9 | 99.2 ± 21.1 | 0.02 |
|
| |||
| Duration uterine surgery (min) | 66.4 ± 25.3 | 54.4 ± 18.3 | 0.04 |
|
| |||
| Time on MgSO4 tocolysis (hrs) | 22.1 ± 3.4 | 22.3 ± 3.2 | 0.72 |
|
| |||
| Oligohydramnios | 0.12 | ||
| Yes | 4/15 (26.7) | 11/15 (73.3) | |
| No | 36/74 (48.7) | 38/74 (51.4) | |
|
| |||
| Membrane separation | 0.01 | ||
| Yes | 19/30 (63.3) | 11/30 (36.7) | |
| No | 21/59 (35.6) | 38/59 (64.4) | |
Per protocol analysis of the 89 women who underwent prenatal surgery; data presented as n (%) or mean ± SD