title: Transcranial doppler in sickle cell anaemia: evaluation of brain blood flow parameters in children of Aracaju, Northeast-Brazil.
abstract: BACKGROUND
  Environmental factors interfere on sickle cell anaemia (SCA). Transcanial Doppler (TCD) is important to evaluate cerebrovascular disease.
  
  
  OBJECTIVE
  To evaluate brain haemodynamic profile of children with SCA in Sergipe.
  
  
  METHODS
  Cross sectional study (group1: SCA patients aged 3-18; group2: age and sex matched healthy individuals). Baseline brain flow was evaluated.
  
  
  RESULTS
  Group1=34 patients; group 2=81 controls. SCA patients had mean velocity (MV)=125.69 cm/s+/-23.40; pulsatility index (PI)=0.66+/-0.10; middle cerebral artery ratio (MCAr)=14.53+/-15.23; right anterior cerebral artery/right middle cerebral artery=0.77+/-0.20; left anterior cerebral artery/left middle cerebral artery=0.78+/-0.20. Controls had MV=79.44+/-15.54; PI=0.82+/-0.11; MCAr=13.19+/-13.77; right anterior cerebral artery/right middle cerebral artery=0.80+/-0.16; left anterior cerebral artery/left middle cerebral artery=0.84+/-0.18. MV and PI differences were statistically significant between groups. MV was related to age but not to gender.
  
  
  CONCLUSIONS
  MV evaluation using TCD was similar to international standards and possible to be used in our setting.
authors.affiliation: Department of Medicine, University Hospital, Federal University of Sergipe, Aracaju, SE, Brazil. hyder@infonet.com.br
authors.forename: Hyder Aragão de
authors.initials: HA
authors.lastname: Melo
authors.forename: José Augusto S
authors.initials: JA
authors.lastname: Barreto-Filho
authors.forename: Roberto César P do
authors.initials: RC
authors.lastname: Prado
authors.forename: Rosana
authors.initials: R
authors.lastname: Cipolotti
mesh_terms: D000293:Adolescent; D000755:Anemia, Sickle Cell / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology; D001783:Blood Flow Velocity; D001921:Brain / Q000098:blood supply*; D001938:Brazil; D016022:Case-Control Studies; D002561:Cerebrovascular Disorders / Q000000981:diagnostic imaging* / Q000209:etiology / Q000503:physiopathology; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D005260:Female; D006439:Hemodynamics; D006801:Humans; D008297:Male; D020768:Middle Cerebral Artery / Q000000981:diagnostic imaging* / Q000503:physiopathology; D017585:Ultrasonography, Doppler, Transcranial