Publications by authors named "Shiyo Ota"

Purpose: Since chromosomal abnormalities can be detected in more than half of miscarriages, cytogenetic testing of the product of conception (POC) can provide important information when preparing for a subsequent pregnancy. Conventional karyotyping is the common diagnostic method for a POC but can be problematic due to the need for cell culture.

Methods: We here conducted shallow whole-genome sequencing (sWGS) using next-generation sequencing (NGS) for alternative POC cytogenomic analysis.

View Article and Find Full Text PDF

Aim: To elucidate the incidence of and risk factors for severe hypertensive disorders (HD) and related maternal complications in uncomplicated twin pregnancies that reached 36 weeks' gestation.

Methods: We conducted a prospective cohort study of twin pregnancies delivered after 36 weeks' gestation. Cases of twin-twin transfusion syndrome, twin anemia-polycythemia sequence, malformed fetuses, monoamniotic twins, selective reduction, fetal therapy and HD or fetal death before 35 weeks' gestation were excluded.

View Article and Find Full Text PDF

Aim: Iatrogenic premature rupture of membrane (PROM) is one of the major complications related to fetoscopic laser photocoagulation (FLP) for twin-twin transfusion syndrome (TTTS). However, amniotic fluid leakage (AFL) sometimes spontaneously disappears. This study evaluated the incidence and clinical characteristics of transient AFL after FLP.

View Article and Find Full Text PDF

Aim: The prognosis for non-immune hydrops fetalis (NIHF) is still poor despite progress in perinatal care. We have examined perinatal and 1-year outcomes for NIHF in relation to gestational age at diagnosis and underlying etiology in order to identify predictors of mortality.

Methods: A retrospective review was conducted of 92 pregnancies with NIHF managed in hospital between 2000 and 2012.

View Article and Find Full Text PDF

Objective: We aimed to investigate the clinical characteristics and postnatal outcomes of fetuses with congenital diaphragmatic hernia (CDH) and additional anomalies.

Materials And Methods: We reviewed the charts of fetuses with CDH managed between 2005 and 2013. Patients were divided into complex and isolated groups based on the presence of additional anomalies.

View Article and Find Full Text PDF

Aims: The association between the planned delivery mode and adverse perinatal outcomes of monochorionic diamniotic (MCDA) twin pregnancies at ≥36 weeks' gestation was evaluated.

Methods: This retrospective cohort study included uncomplicated MCDA twin pregnancies delivered after 36 weeks' gestation during a 10-year period. Cases were classified into the trial of labor (TOL) or cesarean section (CS) group according to the planned delivery mode.

View Article and Find Full Text PDF