title: There are no rest-activity dependent changes in fetal ductus arteriosus flow velocity patterns at 27-29 weeks of gestation.
abstract: Blood flow velocity waveforms recorded in the fetal ductus arteriosus were related to fetal heart rate pattern (FHRP) in 13 normal pregnancies at 27-29 weeks of gestation. Recording time was always 65 min or more. In three women no low fetal heart rate (FHRP-A) variability was present, in the remaining 10 women high fetal heart rate (FHRP-B) variability was established in 80% of the recording time. There was no statistically significant difference between FHRP-A and FHRP-B pattern for all ductal flow velocity parameters, indicating rest-activity state independency in late second and early third trimester pregnancy.
authors.affiliation: Department of Obstetrics and Gynaecology, Academic Hospital Rotterdam Dijkzigt, Netherlands.
authors.forename: C
authors.initials: C
authors.lastname: Brezinka
authors.forename: T W
authors.initials: TW
authors.lastname: Huisman
authors.forename: T
authors.initials: T
authors.lastname: Stijnen
authors.forename: J W
authors.initials: JW
authors.lastname: Wladimiroff
mesh_terms: D000204:Activity Cycles / Q000502:physiology*; D001783:Blood Flow Velocity; D004373:Ductus Arteriosus / Q000196:embryology* / Q000502:physiology*; D005260:Female; D005865:Gestational Age; D006340:Heart Rate, Fetal; D006801:Humans; D011247:Pregnancy