title: Revision chronic ear surgery.
abstract: OBJECTIVE
  To report results of revision chronic ear surgery following guidelines of the American Academy of Otolaryngology-Head and Neck Surgery and to establish expectations for infection and cholesteatoma control and hearing outcomes.
  
  
  METHODS
  Retrospective case review of all patients who underwent revision chronic ear surgery from January 1, 1990 to December 31, 2000. Revision chronic ear surgery included canal wall up and canal wall down procedures with ossicular chain reconstruction performed as needed. Cholesteatoma control, hearing improvement, and closure of middle ear space are main outcome measures.
  
  
  METHODS
  Tertiary referral center.
  
  
  RESULTS
  Cholesteatoma recurrence rate was 57% at 1 year after surgery and 14% in patients with a minimum of a 5-year follow-up. Disease control was achieved in 96% of patients. Hearing was significantly improved in all surgical groups. Closure of the air-bone gap for revision partial ossicular replacement prosthesis cases (PORP) to less than 20 dB occurred in 50% of patients. Closure of the air-bone gap to within 30 dB for revision total ossicular replacement prosthesis (TORP) occurred in 60% of patients. Canal wall down status had a significant impact on hearing results after PORPs and TORPs; patients with intact canal walls had significantly better hearing results. Diagnosis of cholesteatoma significantly impacted hearing results for TORPs but not PORPS.
  
  
  CONCLUSIONS
  Cholesteatoma control rates after revision surgery are similar to primary cases. Significant improvement in hearing can be expected after revision chronic ear surgery. Hearing results after a revision surgery that requires a PORP is worse than primary cases and is canal wall status dependent. Closure of the middle ear space and creation of a safe dry ear can be expected after revision chronic ear surgery.
  
  
  CONCLUSIONS
  This is a review of a large series of exclusively revision chronic ear surgery.
  
  
  METHODS
  C-4.
authors.affiliation: Otology Group of Vanderbilt, 300 20th Avenue North, Suite 502, Nashville, TN 37203, USA. david.kaylie@vanderbilt.edu
authors.forename: David M
authors.initials: DM
authors.lastname: Kaylie
authors.forename: Edward K
authors.initials: EK
authors.lastname: Gardner
authors.forename: C Gary
authors.initials: CG
authors.lastname: Jackson
mesh_terms: D000328:Adult; D001301:Audiometry, Pure-Tone; D002648:Child; D018424:Cholesteatoma, Middle Ear / Q000601:surgery*; D002908:Chronic Disease; D015331:Cohort Studies; D004424:Ear Canal / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D019983:Guideline Adherence; D006309:Hearing / Q000502:physiology; D034381:Hearing Loss / Q000601:surgery; D006801:Humans; D008297:Male; D009998:Ossicular Prosthesis; D010033:Otitis Media / Q000601:surgery*; D017410:Practice Guidelines as Topic; D012008:Recurrence; D012086:Reoperation; D012189:Retrospective Studies; D016896:Treatment Outcome; D018058:Tympanic Membrane Perforation / Q000601:surgery; D014433:Tympanoplasty