title: The effect of adenoid hypertrophy on tympanometric findings in children without hearing loss.
abstract: OBJECTIVE
  This study aims to investigate the effects of adenoid hypertrophy on negative middle ear pressure and diagnostic efficiency of tympanogram in the detection of otitis media with effusion in children without parental suspicion of hearing loss.
  
  
  METHODS
  Fifty-six children (26 boys, 30 girls; mean age 5.9±2.2 years; range, 3 to 12 years) who underwent adenoidectomy were analyzed using otoscopy, nasal endoscopy, and tympanometry (before 1 week and 3 months after adenoidectomy).
  
  
  RESULTS
  The median negative middle ear pressure before the adenoidectomy was significantly higher from after adenoidectomy (p=0.045). Type B tympanogram were detected in 13 of the 112 ears preoperatively. About 17.9% (n=20) of the ears with otitis media with effusion were confirmed by myringotomy.
  
  
  CONCLUSIONS
  Our study findings suggest that the adenoid hyperthrophy is associated with increased negative pressure in the middle ear. We believe that it is necessary to perform the middle ear examination and tympanometry in children before adenoidectomy and in children without parental suspicion of hearing loss, even.
authors.affiliation: Department of Otolaryngology, Medical Faculty of Adnan Menderes University, 09010 Aydın, Turkey. drgunel@hotmail.com.
authors.forename: Ceren
authors.initials: C
authors.lastname: Günel
authors.forename: Barış
authors.initials: B
authors.lastname: Ermişler
authors.forename: H Sema
authors.initials: HS
authors.lastname: Başak
mesh_terms: D000158:Acoustic Impedance Tests; D000233:Adenoidectomy; D000234:Adenoids / Q000473:pathology* / Q000601:surgery; D002648:Child; D002675:Child, Preschool; D005260:Female; D034381:Hearing Loss; D006320:Hearing Tests; D006801:Humans; D006984:Hypertrophy / Q000150:complications / Q000601:surgery; D008297:Male; D008876:Middle Ear Ventilation; D010034:Otitis Media with Effusion / Q000150:complications*; D011446:Prospective Studies