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- W2053984148 abstract "Placenta previa is associated with induced preterm cesarean section (CS) due to maternal hemorrhage. Preterm delivery (PTD), either spontaneous or induced, is a recurrent event. Yet, there is a paucity of information regarding the recurrence of PTD in patients with placenta previa who delivered preterm. The objective of this study was to determine whether patients with placenta previa with PTD are at increased risk for recurrent PTD. This retrospective population based cohort study included patients with a singleton gestation who delivered subsequently to a primary CS (n=7429). The rate of placenta previa, its recurrence, and the risk for PTD at the subsequent pregnancy after having a placenta previa at the index pregnancy were determined. 1) The rate of placenta previa in the index pregnancy was 3.1% (229/7429), and 1.02% (76/7429) in the following pregnancy. 2) Patients with a placenta previa at the index pregnancy had a higher risk of recurrence than those without a placenta previa [OR 3.26 (95% CI 1.4-7.5)]. 3) The rate of PTD in patients with a placenta previa in the index CS was 54.1% (124/229). 4) These patients had a higher incidence of recurrent PTD in the following pregnancy than the rest of the study population [preterm placenta previa at index CS: 21% (26/124) vs. study cohort: 10.04% (733/7303), p<0.001, OR 2.38 (95%CI 1.5-3.8)]. 5) Moreover, among patient with a placenta previa in the index CS, those who delivered preterm had an OR of 6.7 (95% CI 2.2-27.2) for recurrent PTD in the subsequent pregnancy in comparison to those who delivered at term. 6) In a multiple logistic regression model, patients with a placenta previa who delivered preterm had an OR of 2.09 (95% CI 1.3-3.3) for recurrent PTD. 1) Placenta previa in the index CS increases the risk for its recurrence in the following pregnancy. 2) Induced PTD due to placenta previa is an independent risk factor for recurrent PTD in the next pregnancy. These findings suggest that such patients are at risk for repeated PTD and should be followed as such in subsequent pregnancies." @default.
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- W2053984148 date "2011-01-01" @default.
- W2053984148 modified "2023-09-23" @default.
- W2053984148 title "517: Preterm delivery due to placenta previa is an independent risk factor for preterm birth in subsequent pregnancy" @default.
- W2053984148 doi "https://doi.org/10.1016/j.ajog.2010.10.536" @default.
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