Modification of surgical procedures of type 1 tympanoplasty for non-cholesteatomatous chronic otitis media.
OBJECTIVE
To introduce our modified procedures of type 1 tympanoplasty and to assess their efficacy.


METHODS
We modified the surgical procedures of type 1 tympanoplasty and have used these procedures since September 1999. The modified points are enlargement of the facial recess approach, no elevation of the posterior meatal skin and the tympanic annulus, and endoaural repair of tympanic membrane perforation. 51 patients with simple chronic otitis media have undergone this modified type 1 tympanoplasty. Postoperative hearing was evaluated according to the criteria proposed by the Otological Society of Japan.


RESULTS
The average follow-up period was 15 months (range 6-35). The hearing result was considered successful when the postoperative hearing level satisfied with at least one of three conditions as follows: (1) air-bone gap <15 dB, (2) hearing gain >15 dB, or (3) hearing level >30 dB. The success rate was 94.1%. The average postoperative air-bone gap, hearing gain and hearing level were 3.9, 10.0 and 29.3 dB, respectively.


CONCLUSIONS
Our modified tympanoplasty is useful to achieve better postoperative hearing results.
Kakigi
Akinobu
A
Department of Otolaryngology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Tokyo, Japan. kakigi-tky@umin.ac.jp
Takeda
Taizo
T
Nakatani
Hiroaki
H
Kozakura
Kenichi
K
Sawada
Shoichi
S
Nishioka
Rie
R
Fukushima
Kei
K
Taguchi
Daizo
D
Matsumoto
Noboru
N
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002908:Chronic Disease; D005260:Female; D005500:Follow-Up Studies; D006309:Hearing; D006801:Humans; D008297:Male; D008875:Middle Aged; D010033:Otitis Media / Q000601:surgery*; D016896:Treatment Outcome; D014433:Tympanoplasty / Q000379:methods*