Aim: To elucidate factors associated with a poor neonatal prognosis in preterm placental abruption. Methods: A multicenter retrospective study was conducted. A total of 247 cases with preterm placental abruption during 2009, derived from an electronic database constructed by the Japan Society of Obstetrics and Gynecology, were investigated as the subjects of this study, and were divided into th...

Objective. To determine circadian variation in the onset of placental abruption. Methods. A retrospective study involving 115 placental abruptions, divided into four subgroups based on initial symptoms comprising abdominal pain, vaginal bleeding, both abdominal pain and bleeding, or other symptoms. The time of the initial symptom was considered the disease onset. We analyzed the frequency of di...

Introduction: Multiple pregnancy is simultaneous development of more than one fetus in uterus. Multifetal gestations are found to be associated with significantly higher maternal morbidity and health care service costs. Women multifetal gestation nearly six times likely hospitalized complications, including preterm labor, preeclampsia, premature rupture membrane, placental abruption, hydramnios...