Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2021
Cochlear Dysfunction Is a Frequent Feature of Facioscapulohumeral Muscular Dystrophy Type 1 (FSHD1).
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Frezza Erica, Fuccillo Emanuela, Petrucci Antonio, Greco Giulia, Nucera Gabriele, Bruno Ernesto, Giardina Emiliano, Tupler Rossella, Di Mauro Roberta, Di Girolamo Stefano, Massa Roberto
Аннотация
INTRODUCTION: Facioscapulohumeral muscular dystrophy type 1 (FSHD) represents one of the most common forms of muscular hereditary diseases and it is characterized by a great clinical variability with the typical muscular symptoms and other clinical features, including hearing impairment. However, etiopathogenetic mechanisms of auditory dysfunction are still not completely understood and it has been suggested that it could be assigned to a cochlear alteration that is present even in those subjects with a normal pure tonal audiometry (PTA) examination.
METHODS: We found out the cochlear function in 26 patients with molecular diagnosis of FSHD1 and in healthy controls. All patients underwent complete neurological and audiological examinations, including FSHD clinical score, pure-tone audiometry (PTA), and otoacoustic emissions (OAEs), in particular transient evoked otoacoustic emissions (TEOAEs) and distortion product evoked otoacoustic emissions (DPOAEs).
RESULTS: All FSHD1 patients showed significantly reduced DPOAEs and TEOAEs, bilaterally and at all frequencies, even when considering only subjects with a normal PTA or a mild muscular involvement (FSHD score ≤ 2). No correlation between OAEs and FSHD clinical score was found.
DISCUSSION: Cochlear echoes represent a sensitive tool in detecting subclinical cochlear dysfunction in FSHD1 even in subjects with normal hearing and/or subtle muscle involvement. Our study is focused on the importance of evaluating the cochlear alteration through OAEs and, in particular, by performing TEOAEs and DPOAEs sequentially, to evaluate more frequent specificities of cochlear dysfunction with a wider spectrum of analysis.
METHODS: We found out the cochlear function in 26 patients with molecular diagnosis of FSHD1 and in healthy controls. All patients underwent complete neurological and audiological examinations, including FSHD clinical score, pure-tone audiometry (PTA), and otoacoustic emissions (OAEs), in particular transient evoked otoacoustic emissions (TEOAEs) and distortion product evoked otoacoustic emissions (DPOAEs).
RESULTS: All FSHD1 patients showed significantly reduced DPOAEs and TEOAEs, bilaterally and at all frequencies, even when considering only subjects with a normal PTA or a mild muscular involvement (FSHD score ≤ 2). No correlation between OAEs and FSHD clinical score was found.
DISCUSSION: Cochlear echoes represent a sensitive tool in detecting subclinical cochlear dysfunction in FSHD1 even in subjects with normal hearing and/or subtle muscle involvement. Our study is focused on the importance of evaluating the cochlear alteration through OAEs and, in particular, by performing TEOAEs and DPOAEs sequentially, to evaluate more frequent specificities of cochlear dysfunction with a wider spectrum of analysis.