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KMID : 0361020210640110785
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Korean Journal of Otolaryngology - Head and Neck Surgery
2021 Volume.64 No. 11 p.785 ~ p.791
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Hearing Results After Type I Tympanoplasty With Versus Without Mastoidectomy
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Lee Jun-Young
Hong Sung-Kwang
Lee Hyo-Jeong
Lee Jong-Kyu
KIm Hyung-Jong
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Abstract
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Background and Objectives The purpose of the mastoidectomy and tympanoplasty is toimprove the hearing by removing the middle ear lesion and reconstructing the hearing mechanism.
The purpose of this study is to verify whether several factors, including the presence ofmastoidectomy can affect the hearing outcome of tympanoplasty patients.
Subjects and Method From 1989 to 2018, 1260 patients with chronic otitis media who hadbeen followed up for more than 6 months after type 1 tympanoplasty were selected. The eachpatient group was divided into 2 groups based on the last audiometry; Group A (post operativeair-bone gap [ABG] ≤10 dB HL) and Group B (post operative ABG >10 dB HL). We analyzedthe various factors including patency of E-tube or mastoid aeration for each group tofigure out which factors affect the post operative hearing outcome.
Results In conclusion, even with mastoidectomy, the final hearing after surgery was worsethan that of the group who underwent tympanoplasty only (final ABG; tympanoplasty onlyvs. tympanoplasty with mastoidectomy; 6.59±9.09 vs. 9.71±8.94). In both with and withoutmastoidectomy group, the size of the perforation and external ear canal diameter before surgerydid not affect the final hearing outcome. On the otherhand, in the group with mastoidectomy,mastoid pneumatization and E-tube patency affected the postoperative prognosis, butnot in the case without mastoidectomy.
Conclusion In this study, the factors affecting postoperative hearing success were analyzed.
The results can be used to predict the postoperative hearing prognosis and to help select surgicaltreatment.
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KEYWORD
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Hearing loss, Mastoidectomy, Prognosis, Tympanoplasty
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