title: High Frequency Tympanometry (1,000 Hz) for Neonates with Normal and Abnormal Transient Evoked Otoacoustic Emissions.
abstract: OBJECTIVE
  This paper aimed at evaluating the characteristics of high-frequency (1,000 Hz) acoustic admittance (ya) for the neonates with transient evoked otoacoustic emissions (TEOAE) as either pass or refer group.
  
  
  METHODS
  Using a 1,000 Hz probe tone, 297neonates (152 male, 145 female aged 0-104 days old) were evaluated. Tympanometric parameters admittance value at +200 dapa, middle ear admittance, and tympanometric peak pressure were calculated for each tympanogram.
  
  
  RESULTS
  The mean of ya was 0.9678 mmho in the TEOAE for the pass group and 0.7229 mmho in the refer group. The mean of acoustic admittance at +200 (y200) was 2.0657 in the TEOAE for the pass group and 1.7191 for the refer group. The mean of Tpp was 23/8591 in the TEOAE for the pass group and 59/7619 for the refer group.
  
  
  CONCLUSIONS
  There were significant differences in the distribution of different types of tympanograms, the mean of ya, tympanic peak pressure, and y200 between the TEOAEs for the pass and the refer groups.
authors.affiliation: School of Rehabilitation Sciences, Hamadan University of Medical Sciences & Health Services, Hamadan, Iran.
authors.forename: Maryam
authors.initials: M
authors.lastname: Emadi
authors.affiliation: School of Rehabilitation Sciences, Hamadan University of Medical Sciences & Health Services, Hamadan, Iran.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Rezaei
authors.affiliation: School of Rehabilitation Sciences, Hamadan University of Medical Sciences & Health Services, Hamadan, Iran.
authors.forename: Morteza Hamidi
authors.initials: MH
authors.lastname: Nahrani
authors.affiliation: School of Rehabilitation Sciences, Shahid Beheshti University of Medical Sciences & Health Services, Tehran, Iran.
authors.forename: Masoud
authors.initials: M
authors.lastname: Bolandi
keywords: Infant hearing; Otoacoustic emissions; Static peak admittance; Tympanic peak pressure; Tympanometry