Title of article
Ear surgery techniques results on hearing threshold improvement
Author/Authors
Mokhtarinejad, Farhad Department of Otorhinolaryngology - Head and Neck Surgery - Shahid Beheshti University of Medical Sciences, Tehran , Soheili Pour, Saeed Department of Otorhinolaryngology - Head and Neck surgery - Isfahan University of Medical Sciences, Isfahan , Nilforoush, Mohammad Hussein Department of Audiology - School of Rehabilitation Sciences - Isfahan University of Medical Sciences, Isfahan , Sepehrnejad, Mahsa Department of Audiology - School of Rehabilitation Sciences - Isfahan University of Medical Sciences, Isfahan , Mirelahi, Susan Department of Otorhinolaryngology - Head and Neck surgery - Isfahan University of Medical Sciences, Isfahan
Pages
4
From page
746
To page
749
Abstract
Background: Bone conduction (BC) threshold depression is not always by means of sensory neural hearing loss and sometimes it is
an artifact caused by middle ear pathologies and ossicular chain problems. In this research, the influences of ear surgeries on bone
conduction were evaluated. Materials and Methods: This study was conducted as a clinical trial study. The ear surgery performed
on 83 patients classified in four categories: Stapedectomy, tympanomastoid surgery and ossicular reconstruction partially or totally;
Partial Ossicular Replacement Prosthesis (PORP) and Total Ossicular Replacement Prosthesis (TORP). Bone conduction thresholds
assessed in frequencies of 250, 500, 1000, 2000 and 4000 Hz pre and post the surgery. Results: In stapedectomy group, the average
of BC threshold in all frequencies improved approximately 6 dB in frequency of 2000 Hz. In tympanomastoid group, BC threshold
in the frequency of 500, 1000 and 2000 Hz changed 4 dB (P-value < 0.05). Moreover, In the PORP group, 5 dB enhancement was
seen in 1000 and 2000 Hz. In TORP group, the results confirmed that BC threshold improved in all frequencies especially at 4000
Hz about 6.5 dB. Conclusion: In according to results of this study, BC threshold shift was seen after several ear surgeries such as
stapedectomy, tympanoplasty, PORP and TORP. The average of BC improvement was approximately 5 dB. It must be considered
that BC depression might happen because of ossicular chain problems. Therefore; by resolving middle ear pathologies, the better
BC threshold was obtained, the less hearing problems would be faced.
Keywords
Bone conduction , hearing threshold improvement , partial ossicular replacement prosthesis , stapedectomy , total ossicular replacement prosthesis , tympanoplasty
Journal title
Astroparticle Physics
Serial Year
2013
Record number
2432398
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