title: [Presystolic increasing maximal flow velocity in the intracranial vessels in 3 children with heart failure].
abstract: The doppler-sonographic examination of flow velocities in intracerebral arteries is of central importance in the diagnostic evaluation of potential neurologic complications in intensive care patients. Furthermore pulsed Doppler-sonography can assess the hemodynamic consequences of several congenital heart defects (e.g. the ductus arteriosus Botalli). Characteristics of the normal flow profile in the intracranial arteries are the systolic and diastolic forward flow caused by the "Windkessel" function of the aorta. Well known pathologic flow profiles (systolically and diastolically increased flow velocities, diastolically decreased flow velocities and diastolic retrograde flow) occur in neurologic and cardiovascular diseases. We have investigated three children after cardiac surgery, who showed a presystolic increase in the flow velocities, which is clearly different from the flow profiles mentioned above. In our opinion, this abnormal flow pattern is due to a decreased ventricular output in combination with an elevated central venous pressure in these patients.
authors.affiliation: Klinik mit Poliklinik für Kinder und Jugendliche, Universität Erlangen.
authors.forename: T
authors.initials: T
authors.lastname: Rupprecht
authors.forename: D
authors.initials: D
authors.lastname: Wölfel
authors.forename: M
authors.initials: M
authors.lastname: Hofbeck
authors.forename: R
authors.initials: R
authors.lastname: Reif
authors.forename: K H
authors.initials: KH
authors.lastname: Deeg
authors.forename: H
authors.initials: H
authors.lastname: Singer
mesh_terms: D001024:Aortic Valve Stenosis / Q000503:physiopathology / Q000601:surgery; D001783:Blood Flow Velocity; D002536:Cerebral Arteries / Q000000981:diagnostic imaging / Q000503:physiopathology*; D002675:Child, Preschool; D005260:Female; D006330:Heart Defects, Congenital / Q000503:physiopathology*; D006345:Heart Septal Defects, Ventricular / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D007223:Infant; D008297:Male; D011379:Prognosis; D014188:Transposition of Great Vessels / Q000503:physiopathology / Q000601:surgery; D014463:Ultrasonography
vernacular_title: Präsystolisch ansteigende maximale Flussgeschwindigkeit in den intrakranialen Gefässen bei drei Kindern mit Herzversagen.