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. Author manuscript; available in PMC: 2014 Dec 18.
Published in final edited form as: Am J Obstet Gynecol. 2014 May 22;211(3):308.e1–308.e6. doi: 10.1016/j.ajog.2014.05.030

TABLE 2.

Delivery characteristics and neonatal outcomes of those with early vs later PPROM

Characteristic Early PPROM
(n = 275)
Later PPROM
(n = 1256)
P value
Rupture-to-delivery interval,
d, mean ± SD
20.0 ± 20.2 10.4 ± 10.7 < .001
Gestational age at delivery,
wks, mean ± SD
26.6 ± 2.5 30.1 ± 2.2 < .001
Received antenatal corticosteroids 272 (98.9) 1226 (97.6) .180
Placental abruption 29 (10.6) 99 (7.9) .148
Chorioamnionitis 45 (16.4) 151 (12.0) .051
Cesarean delivery 127 (46.2) 456 (36.3) .002
Postpartum endometritis 24 (8.7) 74 (5.9) .082
Maternal length of hospitalization,
d, mean ± SD
19.1 ± 17.1 12.5 ± 11.2 < .001
Male fetus 153 (55.6) 667 (53.1) .446
Birthweight, g, mean ± SD 930 ± 415 1481 ± 444 < .001
Culture-proven sepsis 111 (40.4) 143 (11.4) < .001
Necrotizing enterocolitis
 Any severity 40 (14.6) 91 (7.3) < .001
 Severe (stage 2 or 3) 22 (8.0) 43 (3.4) .001
Retinopathy of prematurity 138 (50.2) 190 (15.1) < .001
Bronchopulmonary dysplasia 136 (49.5) 127 (10.1) < .001
Neonatal seizures 15 (5.5) 15 (1.2) < .001
Intraventricular hemorrhage
 Any severity 76 (29.5) 237 (19.4) < .001
 Severe (grade III or IV) 15 (5.8) 13 (1.1) < .001
Periventricular leukomalacia 10 (3.9) 16 (1.3) .004
Death prior to initial hospital
discharge
46 (16.7) 31 (2.5) < .001
Composite severe neonatal
morbiditya
208 (75.6) 274 (21.8) < .001

Unless otherwise specified, data are listed as n (percentage).

PPROM, preterm premature rupture of membranes.

a

Diagnosis of sepsis, bronchopulmonary dysplasia, severe grade III or IV intraventricular hemorrhage, periventricular leu-komalacia, severe stage 2 or 3 necrotizing enterocolitis, and/or death.

Manuck. Outcomes following early PPROM. Am J Obstet Gynecol 2014.