Placental types and effective perinatal management of vasa previa: Lessons from 55 cases in a single institution

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Abstract

Background: We aimed to identify clinical characteristics and outcomes for each placental type of vasa previa (VP). Methods: Placental types of vasa previa were defined as follows: Type 1, vasa previa with velamentous cord insertion and non-type 1, vasa previa with a multilobed or succenturiate placenta and vasa previa with vessels branching out from the placental surface and re-turning to the placental cotyledons. Results: A total of 55 cases of vasa previa were included in this study, with 35 cases of type 1 and 20 cases of non-type 1. Vasa previa with type 1 showed a significantly higher association with assisted reproductive technology, compared with non-type 1 (p = 0.024, 60.0% and 25.0%, respectively). The diagnosis was significantly earlier in the type 1 group than in the non-Type 1 group (p = 0.027, 21.4 weeks and 28.6 weeks, respectively). Moreover, the Ward technique for anterior placentation to avoid injury of the placenta and/or fetal vessels was more frequently required in non-type 1 cases (p < 0.001, 60.0%, compared with 14.3% for type 1). Conclusion: The concept of defining placental types of vasa previa will provide useful information for the screening of this serious complication, improve its clinical management and operative strat-egy, and achieve more preferable perinatal outcomes.

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Tachibana, D., Misugi, T., Pooh, R. K., Kitada, K., Kurihara, Y., Tahara, M., … Koyama, M. (2021). Placental types and effective perinatal management of vasa previa: Lessons from 55 cases in a single institution. Diagnostics, 11(8). https://doi.org/10.3390/diagnostics11081369

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