title: [Assessment of levels of otoacoustic emission response in neonates with perinatal asphyxia].
abstract: OBJECTIVE
  To evaluate the effects of perinatal asphyxia on the level of the response to transient otoacoustic emissions in infants.
  
  
  METHODS
  Otoacoustic emissions in 154 neonates were performed: 54 infants who suffered asphyxia at birth, measured by Apgar score and medical diagnosis, and 100 infants without risk were compared. Scores less than 4 in the first minute and/or less than 6 in the fifth minute were considered as "low Apgar". Statistical analysis of the data was performed using the Kruskal, Wilcoxon, and Mann-Whitney nonparametric tests.
  
  
  RESULTS
  Lower levels of response were observed in transient otoacoustic emission in the group that suffered perinatal asphyxia, with significant values for the frequencies 2,000, 3,000, and 4,000Hz in the right ear, and 2,000 and 4,000Hz in the left ear.
  
  
  CONCLUSIONS
  The analysis of the intrinsic characteristics of the otoacoustic emissions evidenced low performance of outer hair cells in neonates who had perinatal asphyxia, which may affect the development of listening skills in this population.
authors.affiliation: Universidade Estadual Paulista (UNESP), Botucatu, SP, Brasil. Electronic address: georgea_espindola@hotmail.com.
authors.forename: Georgea Espindola
authors.initials: GE
authors.lastname: Ribeiro
authors.affiliation: Universidade Estadual Paulista (UNESP), Botucatu, SP, Brasil.
authors.forename: Daniela Polo Camargo
authors.initials: DP
authors.lastname: da Silva
authors.affiliation: Universidade Estadual Paulista (UNESP), Botucatu, SP, Brasil.
authors.forename: Jair Cortez
authors.initials: JC
authors.lastname: Montovani
mesh_terms: D001238:Asphyxia Neonatorum / Q000175:diagnosis / Q000503:physiopathology*; D005072:Evoked Potentials, Auditory; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D015997:Neonatal Screening
keywords: Apgar score; Asfixia neonatal; Asphyxia neonatorum; Neonatal screening; Triagem neonatal; Índice de Apgar