Effects of breastfeeding on postpartum weight change in Japanese women: The Japan Environment and Children's Study (JECS).

Aim: The aim of this study was to examine the relationship between breastfeeding and postpartum maternal weight change.

Method: This study used data from the Japan Environment and Children's Study (JECS), an ongoing nationwide birth cohort study. Participants were categorized into two groups: full breastfeeding (FB) and non-full breastfeeding (NFB) groups.

Characteristics of ovarian endometrioma during pregnancy.

Aim: During pregnancy, the ovarian endometrioma generally decreases in size and occasionally ruptures. We evaluated (1) whether and how ovarian-endometrioma size changes from the first trimester to the postdelivery period, and (2) the type of endometrioma more likely to rupture during pregnancy.

Methods: During an 18-year period (2000-2018), ultrasound in the first trimester revealed ovarian endometrioma in 149 pregnant women at our tertiary institute.

Perinatal outcomes of recurrent placental abruption.

Introduction: The purpose of this study was to classify patients with placental abruption (PA) into those with a history of PA (recurrence group) and those without a history (first-occurrence group), and compare the two groups to investigate whether perinatal outcomes differ between first-time PA and recurrent PA.

Materials And Methods: Subjects include 6475 patients diagnosed with PA from the Pregnancy Birth Registry System of the Japan Society of Obstetrics and Gynecology. Patients were classified into recurrence group and first-occurrence group.

Effects of physical activity during pregnancy on preterm delivery and mode of delivery: The Japan Environment and Children's Study, birth cohort study.

Background: The aim of this study was to examine how physical activity (PA) before and during pregnancy influences pregnancy outcomes, particularly preterm delivery and mode of delivery.

Methods: This study was based on the Japan Environment and Children's Study. A total of 92,796 pregnant women who gave birth to live singleton babies were included.

Expectant Management Leading to Successful Vaginal Delivery following Intrauterine Fetal Death in a Woman with an Incarcerated Uterus.

Expectant management leads to successful vaginal delivery following intrauterine fetal death in a woman with an incarcerated uterus. Management of intrauterine fetal death in the second or third trimester of pregnancy in women with an incarcerated uterus is challenging. We report a case of successful vaginal delivery following intrauterine fetal death by expectant management in a woman with an incarcerated uterus.

Spontaneous reduction of an incarcerated gravid uterus in the third trimester.

An incarcerated gravid uterus is an uncommon complication of pregnancy. On rare occasions, an incarcerated gravid uterus resolves spontaneously even in the third trimester of pregnancy. Severe abdominal pain might be caused by spontaneous reduction and should be considered as a possible cause.

A classification of congenital uterine anomalies predicting pregnancy outcomes.

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.