Audiology Japan 61, , 2018 QOL. CROS Contralateral Routing Of Signals. 90dB. Baha Bone anchored hearing aid FDA Baha

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1 Audiology Japan 61, , 2018 QOL CROSContralateral Routing Of Signals CECommunauté Européennemark 90dB CROSContralateral Routing Of Signals BahaBoneanchored hearing aid FDA Baha

2 271 EU CE Communauté Européennemark UMIN No dBHL 60dBHL Tinnitus Handicap Inventory THI Visual Analog Scale : VAS THI Hz CI2004 1m 1m SN 0dB10dB CI2004 dbhl 1m 700Hz 1000Hz CCITT VAS Tinnitus Handicap InventoryTHI

3 272 Audiology Japan 61, S : 60dBHLSN 0dB10dB CI2004: 70dBSPLSN 10dB 67S : 65dBSPL 1m 1m : 9 : CCITT () : 60, 70, 80dB SPL : : 5 : m VAS : HHIAHearing Handicap Inventory for Adults db Hz Comité Consultatif International Télégraphique et Téléphonique dBSPL PC Visual Analog Scale : VAS : HHIAHearing Handicap Inventory for Adults MESTRO Grade 4 CROS : 163dB 10125dB : 40dB 100dB : SN SN THI : Grade 2HHIA : CT MRI :

4 273 CI VAS : : : : : : : : : : : : THI BN : 8000Hz PT : 8000Hz PT : 8000Hz 35dBHL 50dBHL 45dBHL 35dBHL PT : BN : CONCERTO Flex28 : 25dBHL Hz THI SN VAS HHIA : 60dBHL SN 0dB 60dBHL SN 10dB 70dBSPL SN 10dB HL 65dBSPL 50dB 50dB 50dB 50dB VAS : : :

5 274 Audiology Japan 61, [ ] [ ] : : HHIAHearing Handicap Inventory for Adults CROSContralateral Routing Of SignalsCROS BahaBoneanchored hearing aid FDA Baha TRT CEmark CROS Baha

6 275 THI Effect of cochlear implantation in patients with singlesided deafness. Masahiro Takahashi, Satoshi Iwasaki, Shinya Nishio, Ryosuke Kitoh, Seiichi Shinden,Sho Kanzaki, Kaoru Ogawa and ShinIchi Usami Department of Otolaryngology, International University of Health and Welfare, Mita hospital Department of Otorhinolaryngology, Shinshu University School of Medicine Department of Otolaryngology, Saiseikai Utsunomiya Hospital Department of Otorhinolaryngology Head and Neck Surgery, Keio University School of Medicine Patients with single sided deafness SSD often experience difficulties in hearing and have a reduced quality of life. In Europe, cochlear implantation is already performed for patients with SSD. We performed cochlear implantation in five patients with SSD from four facilities. We diagnosed one case of SSD at our department. Speech perception in noise, sound localization and tinnitus suppression with improved binaural hearing were observed four years after the cochlear implantation. We hope that cochlear implantation would come to be accepted in the future for enabling binaural hearing in patients with SSD. Lin FR, Niparko JK, Ferrucci L : Hearing loss prevalence in the United States. Arch Intern Med 171 : , 2011 Nakashima T, Sato H, Gyo K, et al : Idiopa-

7 276 Audiology Japan 61, 2018 hthic sudden sensorineural hearing loss in Japan. Acta Otolaryngol 134 : , 2014 Nakashima T, Tominaga M, Ishida IM, et al : A nationwide epidemiological survey regarding sudden deafness in 2001factors influencing its prognosis. Audiology Japan 47 : , 2004 Akeroyd MA : The psychoacoustics of binaural heariong. Int J Audiol 45suppl 1: S25S33, 2006 Middlebrooks JC, Green DM : Sound localization by human listeners. Annu Rev Psychol 42 : , 1991 Iwasaki S, Sano H, Nishio S, et al : Hearing handicap in adults with unilateral deafness and bilateral hearing loss. Otol Neurotol 34 : , 2013 :BAHAAudiology Japan 53 : , 2010 Buechner A, Brendel M, LesinskiSchiedat, et al : Cochlear implantation in unilateral deaf subjects associated with ipsilateral tinnitus. Otol Neurotol 31 : , 2010 Nopp P, Schleich P, D Hasse P : Sound localization in bilateral users of MEDEL COMBI 40/ 40cochlear implants. Ear Hear 25 : 214, 2004 Stelzig Y, Jacob R, Mueller J : Preliminary speech recognition results after cochlear implantation in patients with unilateral hearing loss. J Med Case Reports 5 : 343, 2011 Mertens G, Kleine PA, De Ridder D et al : Tinnitus in a singlesided deaf ear reduces speech perception in the nontinnitus ear. Otol Neurotol 34 : , 2013 Van de Heyning P, Vermeire K, De Ridder D et al : Incapacitating unilateral tinnitus in single sided deafness treated by cochlear implantation. Ann Otol Rhinol Laryngol 117 : , 2008 Sladen DP, Frisch CD, Carlson ML, et al : Cochlear implantation for singlesided deafness : A Multicenter Study. Laryngoscope 127 : , 2017 Döge J, Baumann U, Weissgeber T, et al : Singlesided deafness : impact of cochlear implantation on speech perception in complex noise and on auditory localization accuracy. Otol Neurotol 38 : e563e569, 2017 Kitterick PT, O Donoghue GM, Edmondson Jones M, et al : Comparison of the benefits of cochlear implantation versus contralateral routing of signal hearing aids in adult patients with singlesided deafness : study protocol for a prospective withinsubject longitudinal trial. BMC EAR Nose Throat Disord 14 :718, 2014 Firszt JB, Holden LK, Reeder RM, et al : Auditory abilities after cochlear implantation in adults with unilateral deafness : a pilot study. Otol Neurotol 33 : , 2012 Thomas JP, Neumann K, Dazert S, et al : Cochlear implantation in children with congenital singlesided deafness. Otol Neurotol 38 : , 2017 TävoraVieira D, Marino R, Acharya A, et al : The impact of cochlear implantation on speech understanding, subjective hearing performance, and tinnitus perception in patients with unilateral severe to profound hearing loss. Otol Neurotol 36 : , 2015 Kitoh R, Moteki H, Nishio S, et al : The effects of cochlear implantation in Japanese singlesided deafness patients : five case reports. Acta Otolaryngol 135 : , 2016 : Masahiro Takahashi Department of Otolaryngology, International University of Health and Welfare, Mita hospital 143 Mita, Minatoku, Tokyo, , Japan