Blastocyst transfer, its risk of Ectopic Pregnancy in Assisted Reproduction

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  • Kuwahara Akira
    Department of Obstetrics and Gynecology, The University of Tokushima Institute of Health BioSciences
  • Hinokio Kenji
    Department of Obstetrics and Gynecology, The University of Tokushima Institute of Health BioSciences
  • Yamano Shuji
    The University of Tokushima Faculty of Health
  • Irahara Minoru
    Department of Obstetrics and Gynecology, The University of Tokushima Institute of Health BioSciences

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  • ARTにおける子宮外妊娠の発生と胚盤胞移植
  • ART ニ オケル シキュウ ガイ ニンシン ノ ハッセイ ト ハイバンホウイショク

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The clinical benefit of Blasotcyst transfer (BT) in IVF-ET is still controversial. Recent study elucidated the benefit of BT to reduce ectopic pregnancy in assisted reproduction. Retrospective analysis of pregnancies with BT showed lower ectopic pregnancy rate compared to the cleaved stage transfer, especially among patients with tubal factor. There could be few chance of embryo migration into the tube after BT because of a limited period from transfer to implantation, and a reduced frequency of uterine contraction at the time of transfer.<br>

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