hearing loss/edema

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Long-term treatment with chlorthalidone reduces experimental hydrops but does not prevent the hearing loss.

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Long-term treatment of guinea pigs with the diuretics chlorthalidone and acetazolamide, following the experimental obstruction of the endolymphatic duct, was assessed using chronically implanted round window cochlear electrodes. The diuretic chlorthalidone appeared to curb the progressive

[Morphological changes associated with low-tone hearing loss in guinea pig models of early endolymphatic hydrops].

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The present study was to explore the functional and morphological changes in cochleas of guinea pig models of early endolymphatic hydrops. Thirty albino guinea pigs were randomly divided into three groups: control, 4-week model and 8-week model groups. For each group, n = 10. Model groups were

Effect of hearing loss, age, and gender on the outcome of the cochlear hydrops analysis masking procedure.

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OBJECTIVE The aims of the study are to investigate the effect of hearing loss, age, and gender on the outcome of the cochlear hydrops analysis masking procedure (CHAMP) and to assess the clinical utility of CHAMP for the diagnosis of Ménière's disease (MD). METHODS Prospective observational

Correlation between hearing loss and scala media area in guinea pigs with long-standing endolymphatic hydrops.

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OBJECTIVE Histologic analysis of the hydropic and normal guinea pig cochleae was undertaken to assess a potential correlation between the magnitude of endolymphatic hydrops and hearing loss. It was hypothesized that a greater correlation than previously reported might be found by looking at

Effect of hearing loss in electrocochleographic investigation of endolymphatic hydrops using tone-pip and click stimuli.

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Extratympanic electrocochleography (ECochG) was performed on 37 patients referred to the Evoked Potential Clinic with suspected Ménière's disease. The patients were classified according to their hearing impairment and audiometric configuration. Click and tone-pip stimuli with tone frequencies of 1

Is otolithic vertigo accompanied by hearing loss caused by sacculocochlear endolymphatic hydrops?

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CONCLUSIONS Otolithic vertigo is sometimes accompanied by hearing loss. Otolithic vertigo accompanied by hearing loss seems to be caused by sacculocochlear endolymphatic hydrops. OBJECTIVE To clarify the lesion site and pathophysiology of otolithic vertigo (OV) accompanied by hearing

Immune-mediated sensorineural hearing loss with or without endolymphatic hydrops: a clinical and experimental approach.

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Since 1979, when McCabe first described a pattern of bilateral sensorineural hearing loss (SNHL) characterized by a rapid progression over days to weeks, the postulated autoimmune basis of this disease remains unknown. Various attempts have been made to develop the best assays that will clinically

Clinical observation on acute low-frequency hearing loss without vertigo: the role of cochlear hydrops analysis masking procedure as initial prognostic parameter.

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OBJECTIVE Even though it is currently not possible to prove a pathological diagnosis for inner ear disease, acute low-frequency hearing loss (ALFHL) without vertigo could be caused by inner ear hydrops because progression into the clinical spectrum of endolymphatic hydrops (EH) frequently occur

Endolymphatic hydrops: mechanical causes of hearing loss.

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An explanation for the mechanical origin of the hearing loss in endolymphatic hydrops is presented that is based on studies in mechanical cochlear models. An elastic bias of the basilar membrane and/or a mass loading of the cochlear duct account for the low-frequency hearing loss, diplacusis, and

Sudden hearing loss after cialis (tadalafil) use: A unique case of cochlear hydrops.

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We discuss a unique case of sudden sensorineural hearing loss after Cialis (tadalafil) use, a phosphodiesterase 5 (PDE5) inhibitor, and the implication of ipsilateral cochlear hydrops seen on magnetic resonance imaging (MRI). We report a case of a 53-year-old male with unilateral low-frequency

Pharmacological protection of hearing loss in the mouse model of endolymphatic hydrops.

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OBJECTIVE Excitotoxic and related inflammatory injury are implicated in the spiral ganglion degeneration seen with Meniere's disease and endolymphatic hydrops (ELH). Excitotoxicity is initiated with glutamate elevation and associated with downstream increases in reactive oxygen species resulting in

Inner ear hemorrhage and endolymphatic hydrops in a leukemic patient with sudden hearing loss.

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Several significant histopathological findings were noted in a case of sudden hearing loss in a patient with chronic lymphocytic leukemia. The major pathological findings were leukemic hemorrhage into both perilymphatic and endolymphatic spaces in the cochlear and vestibular systems, endolymphatic

Effect of isosorbide on hearing loss due to endolymphatic hydrops.

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Changes in hearing were studied in 145 ears (103 patients) with endolymphatic hydrops before and after an 8-week administration of isosorbide. Hearing improvement was observed in 57 (39.3%) of the 145 ears. These improvements showed a significant correlation with positive results in the glycerol

[Clinical observations of acute low-tone sensorineural hearing loss considered as cochlear hydrops].

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Acute low-tone sensorineural hearing loss (ALHL) has the following three criteria; obscure origin, acute onset and sensorineural hearing loss limited to low frequencies. Sixteen cases of ALHL which were considered as cochlear hydrops using glycerol test and electrocochleogram were studied. All

[Electrocochleography possibilities in the differential diagnosis of hydrops and neural hearing loss].

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Enhancement of the click-evoked summating potential causing a pathological summation to compound action potential ratio (SP/CAP) in patients with endolymphatic hydrops has been described by several groups. An increased SP/CAP ratio is found also in some patients with a tumour of the cerebellopontine

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