Tomoyuki Fujita, Toshiyuki Yoshizato, Hiroshi Mitao, Takuya Shimomura, Takeshi Kuramoto, Hitoshi Obara, Hiroshi Ide, Fumitoshi Koga, Kayoko Kojima, Mari Nomiyama, Mayumi Fukagawa, Yumi Nagata, Atsushi Tanaka, Hiroyuki Yuki, Takafumi Utsunomiya, Hidehiko Matsubayashi, Chikahiro Oka, Kohji Yano, Masahide Shiotani, Masaru Fukuda, Hiromi Hirai, Tatsuyuki Kakuma, Kimio Ushijima
OBJECTIVE: Assisted reproductive technology (ART), especially frozen-thawed embryo transfer (FET) in a hormone replacement cycle (HRC), is a risk factor for placenta accreta spectrum (PAS). This study aimed to clarify the risk factors for PAS related to the maternal background and ART techniques in pregnancies achieved after FET in an HRC. STUDY DESIGN: We performed a case-control study in two tertiary perinatal centres in Japan. Among 14,028 patients who delivered at ≥24 weeks of gestation or were transferred after delivery to two tertiary perinatal centres between 2010 and 2021, 972 conceived with ART and 13,056 conceived without ART...
February 28, 2024: European Journal of Obstetrics, Gynecology, and Reproductive Biology