%0 Journal Article
%T The Influence of Sound Deprivation on Audiologic Outcomes after Cochlear Implantation
%A Maria Stella Arantes do Amaral
%A Ana Cl¨˘udia Mirandola Barbosa Reis
%A Henrique F. Pauna
%A Sarah C. Bernal
%A Eduardo T. Massuda
%A Miguel Angelo Hyppolito
%J International Journal of Clinical Medicine
%P 28-38
%@ 2158-2882
%D 2018
%I Scientific Research Publishing
%R 10.4236/ijcm.2018.91004
%X The cochlear implant is a prosthesis that is capable to replace listening capability among patients with sensorineural hearing loss. Many studies suggest a negative relationship among duration of sound deprivation and audiometric gain (by means of speech perception test) after cochlear implantation. We evaluated surgical and audiologic results among post-lingual deafened adults, in different times of sound deprivation, and correlated with social isolation, presence of vertigo or tinnitus, and the speech therapy yield, between pre- and post-operative stages. A retrospective study was conducted on patients with post-lingual hearing loss, aged over 18 years old who underwent cochlear implant surgery in a public hospital from 2004 to 2014. Audiological, socio-demographic questionnaire, and manifestations of vertigo and tinnitus, during pre- and post-operative stages, were compared and correlating to the different periods of sound deprivation. Two groups were studied. The <em>group </em>A was composed of 38 participants (14 male and 24 female) with sound deprivation of less than 10 years; and <em>group</em> B was composed of 17 participants (8 male and 9 female) with sound deprivation longer than 10 years. We found no differences regarding age, sex, duration of sound deprivation, mean pure-tone audiometric results (pre- and post-surgery), and speech perception tests (pre-operatively). After one year of the surgery, we observed a significant difference between both groups, with a better performance to <em>group </em>A. The results of speech perception test, after cochlear implantation in<em> group</em> B, were worse than the results obtained in <em>group</em> A, although these correlations are not determinant whether to perform cochlear implant surgery or not.
%K Audiometry
%K Cochlear Implantation
%K Sensorineural Hearing Loss
%K Sound Deprivation
%K Deafness
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=81792