title: [Doppler flowmetry of feto-maternal circulation: III --Absent and reverse diastolic flow in the umbilical artery].
abstract: Twelve cases of extreme umbilical blood flow impairement (8 cases with loss of end-diastolic blood flow and 4 cases with reversed flow) found among 658 pregnancies studied by continuous Doppler between April 1st 1989 and March 31st 1990, are reported. The findings were associated to intra-uterine growth retardation (92%), maternal hypertensive disease (50%) and perinatal death (33%); fetal Trisomy 21 was the sole problem in one of the cases with absent end-diastolic frequencies. Our results are discussed and compared to similar data reported recently. Clinical management is proposed, according to umbilical blood flow patterns, length of gestation and underlying clinical situations.
authors.affiliation: Unidade de Alto Risco Obstétrico, Hospital de Santa Maria/Faculdade de Medicina, Lisboa.
authors.forename: L M
authors.initials: LM
authors.lastname: Graça
authors.forename: N
authors.initials: N
authors.lastname: Clode
authors.forename: C G
authors.initials: CG
authors.lastname: Cardoso
authors.forename: A
authors.initials: A
authors.lastname: Colaço
authors.forename: E
authors.initials: E
authors.lastname: Casal
authors.forename: A F
authors.initials: AF
authors.lastname: Jorge
authors.forename: H
authors.initials: H
authors.lastname: Ferreira
authors.forename: R
authors.initials: R
authors.lastname: Pereira
authors.forename: C
authors.initials: C
authors.lastname: Martins
authors.forename: M O
authors.initials: MO
authors.lastname: Silva
mesh_terms: D001783:Blood Flow Velocity; D003971:Diastole; D005260:Female; D005312:Fetal Blood; D005315:Fetal Diseases / Q000503:physiopathology*; D006801:Humans; D011247:Pregnancy; D014463:Ultrasonography; D014469:Umbilical Arteries / Q000000981:diagnostic imaging*
vernacular_title: Fluxometria Doppler da circulação feto-materna: III--Ausência e inversão do fluxo diastólico na artéria umbilical.