Seung Chik Jwa

OBJECTIVE: To report the utilization, effectiveness, and safety of assisted reproductive technologies (ARTs) in 2019. DESIGN: A retrospective, cross-sectional survey derived from cycle and pregnancy outcome data submitted by national and r…

OBJECTIVE: To report utilization, effectiveness, and safety of assisted reproductive technologies in 2015 and 2016. DESIGN: A retrospective, cross-sectional survey of 3,103 assisted reproductive technology clinics in 74 countries in 2015 a…

BACKGROUND: Thyroid autoimmunity (TAI) is prevalent among women of reproductive age and has been associated with impaired fertility; however, its effects on ovarian reserve and infertility treatment outcomes remain controversial. METHODS: …

AIM: To investigate whether the etiology of diminished ovarian reserve (DOR) independently influences outcomes of assisted reproductive technology (ART). METHODS: This multicenter, retrospective cohort study was a secondary analysis of a n…

PURPOSE: This study aimed to develop international expert consensus statements on chronic endometritis (CE) through a comprehensive literature review of existing evidence and a modified Delphi approach. METHODS: Ten panelists of the Japan …

STUDY QUESTION: What updates of the International Glossary on Infertility and Fertility Care are required, to reflect contemporary scientific knowledge, social needs, and inclusive definitions, while harmonizing international communication …

PurposeTo evaluate whether time-lapse monitoring improves embryological outcomes and clinical pregnancy rates compared to conventional culture in a sibling-oocyte study.MethodsThis multicenter-study involved 205 first-time retrieval cycles …

The authors have no conflicts of interest. Data sharing is not applicable to this article as no new data were created or analyzed in this study.

This study aimed to investigate assisted reproductive technology (ART) factors associated with placenta accreta spectrum (PAS) after vaginal delivery. This was a registry-based retrospective cohort study using the Japanese national ART regi…

OBJECTIVES: To investigate the association between adenomyosis and placenta accreta spectrum (PAS) and to evaluate the effect of assisted reproductive technology (ART) in mediating this association. METHODS: We retrieved data for singleton…

PurposeTo evaluate clinical outcomes after endometrial receptivity analysis (ERA).MethodsThis was a multicenter, retrospective cohort study involving 861 women who underwent ERA testing at certified fertility clinics in Japan, and who recei…

BACKGROUND: This study aimed to determine the factors associated with an unfavorable clinical course (emergency surgery and/or prolonged hospitalization) in patients requiring hospitalization owing to pelvic inflammatory disease (PID). MET…

Surgical site infection (SSI) is a common but potentially serious maternal complication of cesarean section (CS). C-reactive protein (CRP) can be used in early detection of SSI. However, its predictive value for post-cesarean SSI has never …

PURPOSE: We investigated the cumulative live birth rate (CLBR) in women receiving governmental subsidies for assisted reproductive technology (ART) in Saitama Prefecture, Japan. METHODS: Women who applied for subsidies from Saitama Prefect…

Studies have consistently reported a significantly reduced incidence of ectopic pregnancy (EP) for frozen-thawed embryo transfer (ET) cycles compared with fresh cycles. However, only a few studies reported an association between endometrial…

BACKGROUND: Children born after intracytoplasmic sperm injection (ICSI) are at increased risk of specific major birth defects compared with children born after in vitro fertilization (IVF). However, whether this risk is due to the treatment…

Previous studies suggested ovarian stimulation was associated with lower birth weight and higher risk of preterm delivery (PTD) from fresh embryo transfers (ETs). However, whether the increased risk differs between distinct ovarian stimulat…

Extrauterine choriocarcinoma in the fallopian tube is very rare and is often diagnosed and treated as an ectopic tubal pregnancy. A 34-year-old woman who initially became pregnant after infertility treatment using ovulation induction with c…