title: Quantification of hearing loss associated with superior semi-circular canal dehiscence.
abstract: BACKGROUND
  Superior semi-circular canal dehiscence (SSCD) is a known cause of hearing loss. This study quantifies hearing loss in SSCD ears in a frequency-specific fashion.
  
  
  METHODS
  A meta-analysis of English language literature pertaining to SSCD was performed, with extraction and evaluation of available human audiometric data. Our own institution's case series of SSCD patients was also similarly analysed. Hearing loss in SSCD ears was compared to same patient control ears and to age-matched normative audiometric data.
  
  
  RESULTS
  Ears with SSCD had statistically significant worse hearing as compared to both normative data and to own normal ear controls at 2000 Hz and below. The effect appears to diminish with increasing frequency.
  
  
  CONCLUSIONS
  The presence of statistically significant conductive hearing loss in the low frequencies was confirmed for SSCD ears. SSCD may also predispose ears to high frequency sensorineural hearing loss.
authors: Otolaryngology - Head and Neck Surgery, Saint Louis University School of Medicine, Saint Louis, MO 63110, USA.
authors: Timothy P
authors: TP
authors: McEvoy
authors: Anthony A
authors: AA
authors: Mikulec
authors: Eric S
authors: ES
authors: Armbrecht
authors: Melissa E
authors: ME
authors: Lowe
mesh_terms: D000368:Aged; D001301:Audiometry, Pure-Tone; D001307:Auditory Perception; D001309:Auditory Threshold / Q000502:physiology*; D001844:Bone Conduction / Q000502:physiology; D005260:Female; D006314:Hearing Loss, Conductive / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D007759:Labyrinth Diseases / Q000150:complications / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011859:Radiography; D012016:Reference Values; D018570:Risk Assessment; D012665:Semicircular Canals / Q000000981:diagnostic imaging / Q000503:physiopathology*; D012720:Severity of Illness Index