Modification of Surgical Procedures of Type 1 Tympanoplasty for Non-Cholesteatomatous Chronic Otitis Media

Abstract

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. Conclusion: Our modified tympanoplasty is useful to achieve better postoperative hearing results.

Partial Mastoid Obliteration Combined With Soft-wall Reconstruction for Middle Ear Cholesteatoma

“…The present study also demonstrated that the overall success rate in hearing was 76% at 6-12 months after ossiculoplasty according to the criteria of the Otological Society of Japan, 15 a fairly good outcome compared to those in previous reports. Some studies have documented that canal-wall-down and open tympanoplasty is unfavorable to preserve and retrieve hearing.…”

“…The hearing gain was ≥15 dB in 24 ears (48.0%). Thirty-eight ears (76.0%) met at least 1 of the 3 following items and were considered as cases of surgical success according to the criteria proposed by the Otological Society of Japan: 15 (1) postoperative air-bone gap ≤15 dB, (2) postoperative hearing level ≤30 dB, or (3) hearing gain ≥15 dB.…”

“…[17][18][19][20] Takahashi et al 14 analyzed 96 patients (98 ears) who underwent canal-wall-down tympanomastoidectomy Criteria for surgical success proposed by the Otology Society of Japan. 15 with mastoid obliteration combined with soft-wall reconstruction. They found 2 ears (2.0%) with postoperative retraction pocket formation, but did not mention the occurrence of residual cholesteatoma.…”

Efficacy of pre-operative computed tomography evaluation of the tympanic cavity for hearing improvement after stapes surgery for tympanosclerosis with stapes fixation

“…The post-operative ABG is the post-operative air-conduction level minus the pre-operative bone-conduction level. We estimated hearing results at six months after surgery according to the tympanoplasty criteria proposed by The Japan otological Society in 2010 2 . An ABG of ≤15 dB was achieved in six ears (6/12), hearing gain ≥15 dB in nine ears (9/12) and air-conduction level threshold ≤ 30 dB in two ears (2/12).…”

“…The success of the operation was individually estimated according to the tympanoplasty criteria proposed by The Japan Otological Society in 2010 2 …”