title: The relationship between fetal heart rate and Doppler blood flow velocity waveforms.
abstract: The degree of fetal heart rate dependency of pulsatility index measurements in the fetal descending aorta, internal carotid artery, and umbilical artery was studied relative to quiet and active sleep states in normal and growth-retarded fetuses at 37-38 weeks of gestation. In all vessels an inverse relationship between pulsatility index and heart rate was established. The degree of this inverse relationship varies proportionally with the level of peripheral vascular resistance in the vessels studied.
authors.affiliation: Academic Hospital Rotterdam-Dijkzigt, Erasmus University Rotterdam, The Netherlands.
authors.forename: J A
authors.initials: JA
authors.lastname: Van Den Wijngaard
authors.forename: J
authors.initials: J
authors.lastname: Van Eyck
authors.forename: J W
authors.initials: JW
authors.lastname: Wladimiroff
mesh_terms: D001013:Aorta, Thoracic / Q000502:physiology; D001783:Blood Flow Velocity; D002343:Carotid Artery, Internal / Q000502:physiology; D005133:Eye Movements; D005260:Female; D005317:Fetal Growth Retardation / Q000175:diagnosis / Q000503:physiopathology; D005333:Fetus / Q000502:physiology; D006340:Heart Rate, Fetal; D006801:Humans; D009068:Movement; D011247:Pregnancy; D011296:Prenatal Diagnosis; D011674:Pulse; D014463:Ultrasonography; D014469:Umbilical Arteries / Q000502:physiology