Preterm prelabor rupture of membranes (PPROM) counseling often focuses on fetal risks. We sought to characterize maternal risk following PPROM and determine factors associated with maternal morbidity. Nested case control study of women with PPROM at a single institution from 2013–2019 admitted at >23 weeks gestational age (GA). Pregnancies complicated by latency < 24 hours, fetal anomalies, higher order multiples, IUFD, and PPROM within 2 weeks of chorionic villus sampling/amniocentesis were excluded. Cases were defined as women with maternal morbidity including: death, sepsis, ICU admission, acute kidney injury (AKI), postpartum (PP) D&C, PP hysterectomy, venous thromboembolism (VTE), PP hemorrhage (PPH), PP wound complication, PP endometritis, pelvic abscess, PP pneumonia, readmission, and/or need for blood transfusion. Controls were women without above morbidities. Severe morbidity was defined as: death, ICU admission, VTE, AKI, PP hysterectomy, sepsis, and/or transfusion >2 units. Demographics, antenatal and delivery characteristics were compared between cases and controls. Bivariate statistics and regression models were used to compare outcomes and calculate adjusted odd ratios, respectively. Of 361 included women, 64 women (17.7%) experienced maternal morbidity and 9 (2.5%) had severe morbidity. Other morbidities are listed in Table 1. Cases were more likely to be older, have private insurance, have BMI >40, have chorioamnionitis at delivery, and undergo cesarean or operative vaginal delivery (Table 2). Admission GA and latency did not differ (Table 2). After controlling for confounders, cesarean delivery, BMI >40 at admission, private insurance, and tobacco use were associated with increased odds of maternal morbidity (Table 2). In this cohort, maternal morbidity occurred in more than 1 of 6 women with PPROM. Private insurance, BMI >40, tobacco use, and cesarean delivery were associated with higher odds of morbidity. These data can be used in counseling and to advocate for smoking cessation among women admitted with PPROM.View Large Image Figure ViewerDownload Hi-res image Download (PPT)
Read full abstract