title: [Assessment of cerebrovascular reactivity using the breath-holding test in hypertensive and normotensive adolescents--preliminary results].
abstract: OBJECTIVE
  Authors report on preliminary results of cerebral vasoreactivity-tests performed in frame of the Debrecen Hypertension Study among hypertensive and healthy adolescents.
  
  
  METHODS
  Investigators measured blood flow velocities before and after 30 seconds of breath holding using transcranial Doppler sonography.
  
  
  RESULTS
  Blood flow velocities at rest were significantly higher in the hypertensive that in the healthy adolescent group. Breath holding induced less intensive cerebral vasoreactivity response in the hypertensive than in the normotensive group.
  
  
  CONCLUSIONS
  It is concluded that altered arteriolar function of the cerebral arterioles can be detected already in this early stage of hypertension.
authors.affiliation: Debreceni Egyetem, Orvos-és Egészségtudományi Centrum, Neurológiai Klinika.
authors.forename: Georgios
authors.initials: G
authors.lastname: Settakis
authors.forename: Dénes
authors.initials: D
authors.lastname: Páll
authors.forename: Andrea
authors.initials: A
authors.lastname: Ficzere
authors.forename: Péter
authors.initials: P
authors.lastname: Siró
authors.forename: Eva
authors.initials: E
authors.lastname: Katona
authors.forename: Dániel
authors.initials: D
authors.lastname: Bereczki
authors.forename: László
authors.initials: L
authors.lastname: Csiba
authors.forename: Béla
authors.initials: B
authors.lastname: Fülesdi
mesh_terms: D000293:Adolescent; D001783:Blood Flow Velocity; D001944:Breath Tests; D002560:Cerebrovascular Circulation / Q000502:physiology; D003971:Diastole; D005260:Female; D006801:Humans; D006973:Hypertension / Q000000981:diagnostic imaging / Q000503:physiopathology*; D008297:Male; D011673:Pulsatile Flow; D012016:Reference Values; D013599:Systole; D017585:Ultrasonography, Doppler, Transcranial