Placenta Accreta: A Case Series and Literature Review

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  • YATABE Natsuki
    Dept. of Obstetrics and Gynecology, Tsuchiura Kyodo General Hospital
  • KITANO Rie
    Dept. of Obstetrics and Gynecology, Tsuchiura Kyodo General Hospital
  • TSUBATA Fumiko
    Dept. of Obstetrics and Gynecology, Tsuchiura Kyodo General Hospital
  • KANEKO Shiho
    Dept. of Obstetrics and Gynecology, Tsuchiura Kyodo General Hospital
  • TAKEUCHI Shiho
    Dept. of Obstetrics and Gynecology, Tsuchiura Kyodo General Hospital
  • TERAMOTO Yuri
    Dept. of Obstetrics and Gynecology, Tsuchiura Kyodo General Hospital
  • MATSUOKA Tatsuya
    Dept. of Obstetrics and Gynecology, Tsuchiura Kyodo General Hospital
  • ICHIKAWA Maiko
    Dept. of Obstetrics and Gynecology, Tsuchiura Kyodo General Hospital
  • ENDO Seiichi
    Dept. of Obstetrics and Gynecology, Tsuchiura Kyodo General Hospital
  • SAKAMOTO Masae
    Dept. of Obstetrics and Gynecology, Tsuchiura Kyodo General Hospital
  • SHIMABUKURO Koji
    Dept. of Obstetrics and Gynecology, Tsuchiura Kyodo General Hospital

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Other Title
  • 当院での癒着胎盤35症例の検討
  • トウ イン デ ノ ユチャク タイバン 35 ショウレイ ノ ケントウ

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Placenta accreta spectrum (PAS) disorders may lead to massive postpartum hemorrhage but optimal treatment strategies have yet to be determined. This retrospective analysis involved 35 cases of PAS that occurred at our hospital between January 2014 and November 2021. Mean maternal age was 37 (21-43) years and 8 pregnancies were the result of assisted reproductive therapy. Fifteen patients had placenta previa, 12 had a history of cesarean delivery, and one had a history of PAS. Mean gestational age was 36 (26-41) weeks. Twenty deliveries were by cesarean section and 15 were vaginal deliveries. Mean blood loss was 2,970 (300-14,727) mL. Nine patients were treated by manual placenta removal, one of whom had a delayed hysterectomy because of bleeding. Eleven patients were treated by cesarean hysterectomy and 2 were treated by curettage. Thirteen patients were treated by conservative management, and in 3 of them, treatment was changed to curettage, abdominal placenta resection, or hysterectomy because of vaginal bleeding or intrauterine infection. Four patients thought to have PAS before delivery were treated by cesarean hysterectomy and the amount of bleeding was not severe. Conservative treatment for placenta accreta was successful in 10 patients (77%), and the uterus could be preserved in 12 women (92%). In cases thought to be PAS before delivery, if the placenta is not removed, cesarean hysterectomy should be selected. Conservative management tends to be selected in cases of PAS when the main part of the placenta can be removed. However, in cases of life-threatening hemorrhage or infection, clinicians might need to perform peripartum hysterectomy or uterine artery embolization when bleeding or infection occurs. Therefore, clinicians should obtain informed consent for such treatment in advance.

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