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  • Title: A classification of congenital uterine anomalies predicting pregnancy outcomes.
    Author: Takami M, Aoki S, Kurasawa K, Okuda M, Takahashi T, Hirahara F.
    Journal: Acta Obstet Gynecol Scand; 2014 Jul; 93(7):691-7. PubMed ID: 24773088.
    Abstract:
    OBJECTIVE: To evaluate pregnancy outcomes in women with uterine anomalies by applying a method for diagnosing and classifying congenital uterine malformations. DESIGN: Retrospective study. SETTING: Tertiary care center. POPULATION: Ninety-four women with uterine anomalies who delivered after 22 gestational weeks. METHODS: Excluding the 14 women with a history of surgery and seven with one endometrial cavity, 73 women with two endometrial cavities were subdivided into those with two external uterine orifices (2-OS subgroup) and those with one external uterine orifice (1-OS subgroup). MAIN OUTCOME MEASURES: Pregnancy outcomes, such as preterm birth, abnormal fetal presentation, cesarean delivery and placental abruption. RESULTS: The 2-OS subgroup comprised women with a didelphic or complete septate uterus who had a significantly higher rate of cesarean delivery (91% vs. 18%, p < 0.001) than the control group (normal uterine morphology; n = 5763). The 1-OS subgroup comprised women with a bicornuate or incomplete septate uterus who had significantly higher rates of preterm birth (27% vs. 5%, p < 0.001) and placental abruption (14% vs. 0.7%, p < 0.001) than the control group. CONCLUSIONS: Classification of uterine anomalies by the number of uterine endometrial cavities and external uterine orifices is an easy and reliable means of predicting pregnancy outcomes.
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