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- W4296301892 abstract "Abstract Background We aimed to assess the association between isolated oligohydramnios in previous pregnancy and the incidence of placental related complications in subsequent pregnancy. Methods This was a retrospective cohort study of live singleton births from a single university affiliated medical center during an eleven-year period. We included women with two subsequent livebirth singleton deliveries at our center. A comparison was performed between subsequent pregnancies of women with isolated oligohydramnios in their first pregnancy (previous oligohydramnios group), and women without isolated oligohydramnios in their first pregnancy (control group). Patients for whom their first delivery was complicated by small for gestational age or pregnancy induced hypertension were excluded. The study groups were compared for obstetric and early neonatal outcomes, as well as recurrence of isolated oligohydramnios and a composite of placental related pregnancy complications, defined as one of the following complications: pregnancy induced hypertension, small for gestational age or placental abruption. Results A total of 218 in the previous oligohydramnios group and 5635 in the control group were compared. No differences were found between the groups in maternal age, body mass index, smoking and comorbidities. Gestational age at delivery was, 39.6 ± 1.1 vs. 39.3 ± 1.4 weeks, p = 0.001, in the oligohydramnios and controls respectively. Preterm birth rate was similar between the groups. As compared to controls, the previous isolated oligohydramnios group had a significantly higher incidence of oligohydramnios recurrence, 6.4% vs. 2.0%, p < 0.001, a higher rate of small for gestational age neonates, 7.8% vs. 4.4%, p = 0.02, and an overall higher rate of placental related disorders of pregnancy, 9.1% vs. 5.4%, p = 0.02. Conclusion Pregnancies complicated by isolated oligohydramnios are associated with an increased risk of placental related disorders in subsequent pregnancy. Isolated oligohydramnios may be the first sign of placental insufficiency and an independent manifestation of the placental related complications spectrum." @default.
- W4296301892 created "2022-09-19" @default.
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- W4296301892 date "2022-09-19" @default.
- W4296301892 modified "2023-09-28" @default.
- W4296301892 title "Isolated oligohydramnios in previous pregnancy is a risk factor for a placental related disorder in subsequent delivery" @default.
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- W4296301892 doi "https://doi.org/10.21203/rs.3.rs-2039174/v1" @default.
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