title: Doppler sonar analysis of swallowing sounds in normal pediatric individuals.
abstract: Among the methods for assessing swallowing sounds - videofluoroscopy modified barium study, fiberoptic swallowing endoscopy, neck auscultation through a microphone, accelerometer and, more recently, the Doppler sonar - we have chosen the latter.
  
  
  OBJECTIVE
  to analyze swallowing sounds by cervical auscultation using Doppler sonar, in a population between 2 and 15 years without oro-pharyngeal dysfunction.
  
  
  METHODS
  cross-sectional historical cohort.
  
  
  METHODS
  we investigated 90 individuals in Curitiba (2006/2007). The population was separated by age into 3 groups: from 2 to 5 years, from 5 to 10 years of age and from 10 to 15 years of age. We obtained the average values for frequency, intensity and swallowing duration for saliva, liquid and pasty foods).
  
  
  RESULTS
  objective and measurable data were obtained. Significance related to gender was found in certain age groups and consistencies, under all the studied variables, except swallowing time.
  
  
  CONCLUSIONS
  neck auscultation using Doppler sonar is a sensitive method to detect swallowing sounds. There was swallowing interference associated with saliva and the other tested food types and with the biological development of the age range being studied. It is an easy to apply method, not expensive and non-invasive.
authors.affiliation: Speech and Audiology Department, Pequeno Príncipe hospital.
authors.forename: Cibele Fontoura
authors.initials: CF
authors.lastname: Cagliari
authors.forename: Ari Leon
authors.initials: AL
authors.lastname: Jurkiewicz
authors.forename: Rosane Sampaio
authors.initials: RS
authors.lastname: Santos
authors.forename: Jair Mendes
authors.initials: JM
authors.lastname: Marques
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D003679:Deglutition / Q000502:physiology*; D004301:Doppler Effect; D005260:Female; D006801:Humans; D008297:Male; D012815:Signal Processing, Computer-Assisted; D013016:Sound