Blog Archives

Vowel Identification by Listeners With Hearing Impairment in Response to Variation in Formant Frequencies

Conclusions: Both increased presentation level for NH listeners and the presence of hearing loss produced a significant change in vowel identification for this stimulus set. Major differences were observed between NH listeners and HI listeners in vowel category overlap and in the sharpness of boundaries between vowel tokens. It is likely that these findings reflect imprecise internal spectral representations due to reduced frequency selectivity.

from the Journal of Speech, Language, and Hearing Research

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The mitochondrial A3243G mutation involves the peripheral vestibule as well as the cochlea

Conclusions:
The A3243G mutation is associated with vestibular dysfunction involving both the superior and inferior vestibular nerve systems. Furthermore, our results from galvanic-VEMP testing suggests that a labyrinthine lesion is primarily responsible for the symptoms of vestibular dysfunction

from The Laryngoscope

High frequency hearing loss in the elderly: effect of age and noise exposure in an Italian group

Conclusion: The threshold differences between patients with presbycusis with and without noise exposure were limited. Larger studies are needed to assess the relative effects of ageing and noise exposure on hearing thresholds.

from the Journal of Laryngology and Otology

Middle ear metastasis of thymoma

Conclusion
We have not found out thymoma metastases to the middle ear in the past.

from Auris Nasus Larynx

Hearing loss in bullous myringitis

The results of the present study demonstrate a high incidence of mixed or sensorineural hearing loss in bullous myringitis patients, and emphasize the need for routine early audiometric evaluation and appropriate follow up for individuals diagnosed as having bullous myringitis.

from Auris Nasus Larynx

The effect of saccular function on static balance ability of profound hearing-impaired children

There was a close relation between the presence of VEMP and ASNR. Additionally, when ASNR was present, the recording of VEMP could be expected. Successful performance in the static balance exercises with reduced vestibular and somatosensory inputs increased the possibility of the recording of ASNR and VEMP.

from the International Journal of Pediatric Otorhinolaryngology

Bilateral superior semicircular canal dehiscence in a child with sensorineural hearing loss and without vestibular symptoms

To report a rare case of bilateral superior semicircular canal dehiscence (SCCD) in a child. Case report, 11-year-old female patient. Descriptive case report. Audiological findings of bilateral symmetrical low frequency sensorineural hearing loss with ascending curves and bilateral superior semicircular canal dehiscence on a high resolution computed tomography (CAT) scan. The young child presented with bilateral fluctuating hearing loss with no vestibular symptoms. She was found to have bilateral superior semicircular canal dehiscence. We hereby present a rare case of bilateral semicircular canal dehiscence found incidentally on high resolution CAT scan in a young child during work up for bilateral sensorineural hearing loss.

from the International Journal of Pediatric Otorhinolaryngology

Bilateral superior semicircular canal dehiscence in a child with sensorineural hearing loss and without vestibular symptoms

To report a rare case of bilateral superior semicircular canal dehiscence (SCCD) in a child. Case report, 11-year-old female patient. Descriptive case report. Audiological findings of bilateral symmetrical low frequency sensorineural hearing loss with ascending curves and bilateral superior semicircular canal dehiscence on a high resolution computed tomography (CAT) scan. The young child presented with bilateral fluctuating hearing loss with no vestibular symptoms. She was found to have bilateral superior semicircular canal dehiscence. We hereby present a rare case of bilateral semicircular canal dehiscence found incidentally on high resolution CAT scan in a young child during work up for bilateral sensorineural hearing loss.

from the International Journal of Pediatric Otorhinolaryngology

Sensorineural Hearing Loss in Patients with Chronic Suppurative Otitis Media

Even though there are other complications of chronic suppurative otitis media, the aspect of hearing loss is often studied. Nevertheless, the occurrence of sensorineural hearing loss in patients with this disease is still controversial. This study aim (1) to assess the association between sensorineural hearing loss and chronic suppurative otitis media, (2) to investigate some clinical factors that might affect the sensorineural component in patients with this disease. This was a retrospective analysis of the clinical records and pure tone audiograms of patients with chronic suppurative otitis media in a Nigerian Tertiary Health Institution from January 2003 to December 2008. Sixty-nine patients with a mean age of 28.93 years; standard deviation of 18.593 were studied. They had an age range of 4–73 years. The duration of otorrhea ranged from 2 months to 20 years; with a mean of 6.11 years (standard deviation of 6.393). The mean bone conduction threshold in the diseased ear was 39.07 dB (standard deviation of 12.028), and 10.26 dB (standard deviation of 2.620) in the control ear (P < 0.05). The mean bone conduction threshold differences between the diseased and control ears range from 21.69 to 34.52 dB across the frequencies 0.5, 1.0, 2.0, and 4.0 kHz. These differences tended to increase with increasing frequency and were all significant (P 0.05; r = 0.190, P > 0.05 respectively). Patients with chronic suppurative otitis media had a significant degree of sensorineural hearing loss in this study. The higher frequencies were more affected; however, the patient’s age and duration of otorrhea seem not to have any correlation with the degree of sensorineural hearing loss.

from the Indian Journal of Otolaryngology

Efficacy comparison of oral steroid, intratympanic steroid, hyperbaric oxygen and oral steroid + hyperbaric oxygen treatments in idiopathic sudden sensorineural hearing loss cases

Idiopathic sudden sensorineural hearing loss is a rare disorder of unknown pathogenesis in which hearing is lost partially or totally. About 60 treatment modalities have been described. We aimed to compare the efficacy of hyperbaric oxygen, oral steroid, intratympanic steroid therapy and their combinations in idiopathic sudden sensorineural hearing loss patients. Files of patients who were followed up between 2004 and 2010 in our clinic were examined retrospectively. Patients were divided into four groups according to the therapy received: Oral steroid, oral steroid + hyperbaric oxygen, intratympanic steroid and hyperbaric oxygen. Treatment success was assessed by Siegel criteria and mean gains using pre-treatment and post-treatment audiograms. 217 patients and 219 ears were examined. The proportion of patients responding to therapy was the highest in the oral steroid + hyperbaric oxygen group with 86.88% (53/61) followed by the oral steroid group with 63.79% (37/58), the intratympanic steroid group with 46,51% (20/43) and the hyperbaric oxygen group with 43.85% (25/57). The proportion of patients who had complete recovery was the highest in the oral steroid + hyperbaric oxygen group with 42.6% (26/61) followed by the oral steroid group with 19.0% (11/58), the hyperbaric oxygen group with 17.5% (10/57) and the intratympanic steroid group with 11.6% (5/43). The oral steroid + hyperbaric oxygen group has the highest mean hearing gain among all groups (p < 0.05). Idiopathic sudden sensorineural hearing loss patients receiving oral steroid + hyperbaric oxygen combination therapy have a higher likelihood of recovery than patients receiving oral steroids, hyperbaric oxygen or intratympanic steroids alone.

from the European Archives of Oto-Rhino-Laryngology

Associations between Diet and Both High and Low Pure Tone Averages and Transient Evoked Otoacoustic Emissions in an Older Adult Population-Based Study

Conclusions:

These data suggest that nutrients with known roles in redox homeostasis and vascular health are associated with auditory function measures in a human population. Further investigation is warranted to determine direct and indirect influences of dietary intake on measures of auditory function and to explore which nutrients/nutrient combinations are predictive of SNHL.

from the Journal of the American Academy of Audiology

Superficial Siderosis of the CNS and Otoneurological Manifestations

Superficial siderosis is an uncommon condition occurring in central nervous system (CNS) due to deposition of hemosiderin in the subpial meningeal layer causing progressive neurological dysfunction. The classical clinical manifestation is a triad of chronic ataxia, bipyramidal signs and progressive bilateral symmetrical sensorineural hearing loss (SNHL). It has rarely been reported in Indian literature. We report an unusual case of superficial siderosis in a 60-year-old farmer who presented with the above triad along with involvement of olfactory nerve. We present this case to highlight the fact that progressive SNHL can be an important sign for the early awareness of this rare disorder. The literature on superficial siderosis is reviewed and the pathogenesis is discussed.

from the Indian Journal of Otolaryngology

Ototoxic Effects of Irradiation

In this study ototoxic effect of ionizing radiation was studied in 70 ears with minimum follow up of 6 months post radiotherapy. Patients of nasopharyngeal carcinoma and with conductive deafness pre radiotherapy were excluded from the study to eliminate mechanical obstruction that may play role in Eustachian tube dysfunction. We found that Eustachian tube dysfunction and conductive deafness were reversible where as Sensorineural hearing loss was an irreversible effect of radiotherapy. Dose of radiation was directly proportional to ototoxicity, minimum 60 Gys of total radiation dose was required to produce significant ototoxicity.

from the Indian Journal of Otolaryngology

Cochlear Implantation in Brown–Vialetto–Van-Laere syndrome

These poor clinical outcomes appear to be related to retrocochlear and probable central auditory pathway degeneration.

from the Journal of Laryngology and Otology

Temporal bone abnormalities in children with GJB2 mutations

Conclusions:
Our study of 113 biallelic GJB2 patients with SNHL and temporal bone imaging is the largest study to date. We found only 10% had any abnormalities, most subtle, and none had EVA. Additionally, there was no correlation between SNHL severity and presence/absence/type of malformations or genotype. Disparities between our group and previous reports may be due to differences in degree of hearing loss, types of mutations, populations studied, and radiologic factors for both image acquisition and interpretation.

from The Laryngoscope