title: [Hydrocephalus in one twin after massive reverse flow in the umbilical artery in the 2nd trimester].
abstract: The case of a twin pregnancy with severe diastolic reverse flow in the umbilical artery of one of the twins at 23 weeks' gestation is reported. After delivery at 29 weeks' gestation, a congenital internal hydrocephalus was diagnosed in this twin. The most probable aetiology is an intrauterine periventricular haemorrhage. The severe diastolic reverse flow in the umbilical artery seems to represent a highly pathological flow pattern of prefinal degree, possibly leading to cerebral defects. The pathophysiology of the Doppler findings and the pathogenesis of the internal hydrocephalus are discussed.
authors.affiliation: Universitäts-Frauenklinik Tübingen.
authors.forename: W
authors.initials: W
authors.lastname: Erz
authors.forename: M
authors.initials: M
authors.lastname: Gonser
authors.forename: M
authors.initials: M
authors.lastname: Vochem
mesh_terms: D000328:Adult; D001783:Blood Flow Velocity / Q000502:physiology; D002543:Cerebral Hemorrhage / Q000000981:diagnostic imaging / Q000235:genetics; D002552:Cerebral Ventricles / Q000000981:diagnostic imaging; D002585:Cesarean Section; D004200:Diseases in Twins; D004453:Echoencephalography; D005260:Female; D005317:Fetal Growth Retardation / Q000000981:diagnostic imaging* / Q000235:genetics; D006801:Humans; D006849:Hydrocephalus / Q000000981:diagnostic imaging* / Q000235:genetics; D007231:Infant, Newborn; D008297:Male; D008431:Maternal-Fetal Exchange / Q000235:genetics / Q000502:physiology*; D011247:Pregnancy; D018608:Ultrasonography, Doppler; D016216:Ultrasonography, Prenatal
vernacular_title: Hydrozephalus eines Zwillings nach massivem Rückstrom in der Nabelarterie im 2. Trimenon.