title: Color Doppler evaluation of the influence of type of delivery, sex, postnatal age and time post feeding on full term healthy newborns cerebral blood flow.
abstract: OBJECTIVE
  The purpose of this study was to evaluate with Color Doppler the influence of type of delivery, sex, postnatal age and time post feeding on full term healthy newborns cerebral blood flow.
  
  
  METHODS
  50 newborns were studied. The Doppler parameters, peak-systolic velocity, end-diastolic velocity, mean velocity, pulsatility index and resistance index, were measured in the anterior cerebral artery, middle cerebral artery, posterior cerebral artery, and basilar artery. The data were compared and analyzed by statistical tests. Informed consent was obtained from all parents, and the study was approved by institutional ethical committee and review board.
  
  
  RESULTS
  We observed not statistically significant differences on cerebral blood flow Doppler parameters in relation to type of delivery, sex, postnatal age and feeding in full term healthy newborns.
  
  
  CONCLUSIONS
  We believe that the knowledge of these cerebral hemodynamic profile of newborns in the first days of life can contribute in an accurate interpretation of cranial Doppler abnormal findings when pathologic flow velocities are analyzed.
authors.affiliation: Departamento de Diagnóstico por Imagem, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo SP, Brazil. drcarlosaranha@hotmail.com
authors.forename: Carlos Alberto
authors.initials: CA
authors.lastname: Aranha
authors.forename: Henrique Manoel
authors.initials: HM
authors.lastname: Lederman
authors.forename: Conceição A M
authors.initials: CA
authors.lastname: Segre
mesh_terms: D000367:Age Factors; D001783:Blood Flow Velocity / Q000502:physiology; D002560:Cerebrovascular Circulation / Q000502:physiology*; D036861:Delivery, Obstetric / Q000379:methods; D005260:Female; D006801:Humans; D007231:Infant, Newborn / Q000502:physiology*; D008297:Male; D012737:Sex Factors; D018615:Ultrasonography, Doppler, Color; D017585:Ultrasonography, Doppler, Transcranial