scholarly journals Characteristics of sensorineural hearing loss secondary to inner ear acoustic trauma

2008 ◽  
Vol 136 (5-6) ◽  
pp. 221-225
Author(s):  
Slobodan Spremo ◽  
Zdenko Stupar
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Hearing Threshold ◽  
Acoustic Trauma ◽  
Sensorineural Hearing ◽  
Cochlear Damage ◽  
Type 3 ◽  
Trauma Group

INTRODUCTION Cochlear damage secondary to exposure to acoustic trauma is the consequence of the acoustic energy effects on the hearing cells in Korti's organ. OBJECTIVE The objective was to assess the correlation between the degree of sensorineural hearing loss and the type of audiogram registered in acoustic trauma exposed patients. METHOD We analyzed 262 audiograms of patients exposed to acoustic trauma in correlation to 146 audiograms of patients with cochlear damage and hearing loss not related to acoustic trauma. "A" group consisted of acoustic trauma cases, while "B" group incorporated cases with hearing loss secondary to cochlear ischaemia or degeneration. All audiograms were subdivided with regard to the mean hearing loss into three groups: mild (21-40 dB HL), moderate (41-60 dB HL) and severe (over 60 dB HL) hearing loss. Based on audiogram configuration five types of audiogram were defined: type 1 flat; type 2 hearing threshold slope at 2 kHz, type 3 hearing threshold slope at 4 kHz; type 4 hearing threshold notch at 2 kHz; type 5 notch at 4 kHz. RESULTS Mild hearing loss was recorded in 163 (62.2%) ears in the acoustic trauma group, while in 78 (29.8%) ears we established moderate hearing loss with the maximum threshold shift at frequencies ranging from 4 kHz to 8 kHz. The least frequent was profound hearing loss, obtained in 21 (8%) audiograms in the acoustic trauma group. Characteristic audiogram configurations in the acoustic trauma patient group were: type 1 (N=66; 25.2%), type 2 (N=71; 27.1%), and type 3 (N=68; 25.9%). Audiogram configurations were significanly different in the acoustic trauma group in comparison to the cochlear ischaemia group of patients (p=0.0005). CONCLUSION Cochlear damage concomitant to acoustic trauma could be assessed by the audiogram configuration. Preserved hearing acuity at low and mild frequency range indicates the limited damage to the hearing cells in Korti's organ in the apical cochlear turn.

Prevalence and classification of asymmetric forms of sensorineural hearing loss in older age group

2021 ◽  
Vol 20 (5) ◽  
pp. 8-12
Author(s):  
T. Yu. Vladimirova ◽  
◽  
A. B. Martynova ◽  
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Hearing Aids ◽  
Hearing Threshold ◽  
Older Age ◽  
Sensorineural Hearing ◽  
Age Group ◽  
The Difference ◽  
The Right

The significance of asymmetric sensorineural hearing loss (ASNHL) is due to a special approach to diagnosis, followed by the process of hearing aids and auditory rehabilitation. Currently, there is no standard audiometric criterion for determining the forms of asymmetry, which significantly affects the assessment of the prevalence of ASNHL. The study aimed to assess the prevalence and classification of ASNHL forms in the older age group using two methods of calculation: 1) the difference in the average hearing threshold at speech frequencies (in the range of 0,5–4 kHz) ≥15 dB was detected in 14,14% of cases; 2) the different degree of hearing loss, according to the International classification, in the right and left ear was 35,98%. In most cases, asymmetry was manifested by bilateral sensorineural hearing loss of varying severity, prevailing in the group of long-livers – 82,6%. Given the potentially high prevalence of asymmetry depending on the audiological criterion, the results of the work are a reason for further research in the development of a unified method for verifying a clinically significant form of ASNHL.

Ears

2020 ◽  
Author(s):  
Peter Pruitt ◽  
Thomas Osborne Stair
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Acoustic Trauma ◽  
Tympanic Membrane Perforation ◽  
Sensorineural Hearing ◽  
Hearing Disorders ◽  
High Frequency Hearing Loss ◽  
Membrane Perforation ◽  
Acute Hearing Loss ◽  
Conductive Hearing

As the structure of the ear is made of little more than cartilage, a limited blood supply, and a thin layer of skin, trauma in this area can easily manifest from a variety of causes. Some common examples of trauma involve laceration, piercing (intentional or otherwise), infection causing chondritis, blunt trauma causing necrosis, rupture of the tympanic membrane, perforation of the ear drum, and acoustic trauma that may result in hearing disorders such as tinnitus and high-frequency hearing loss. Acute hearing loss shows in two forms: conductive hearing loss and sensorineural hearing loss, the latter of which is caused by damage to the anatomic or neurologic structures of the ear dedicated to hearing. Sensorineural hearing loss generally has a poor prognosis and mandates prompt referral to an otolaryngologist.  This review contains 4 figures, 13 tables, and 32 references. Keywords: Ear, auricular canal, trauma, otitis media, otitis externa, hearing loss, mastoiditis, cerumen, impaction

scholarly journals Effects of Various Extents of High-Frequency Hearing Loss on Speech Recognition and Gap Detection at Low Frequencies in Patients with Sensorineural Hearing Loss

2017 ◽  
Vol 2017 ◽  
pp. 1-9
Author(s):  
Bei Li ◽  
Yang Guo ◽  
Guang Yang ◽  
Yanmei Feng ◽  
Shankai Yin
Keyword(s):  
Hearing Loss ◽  
Speech Recognition ◽  
Sensorineural Hearing Loss ◽  
High Frequency ◽  
Hearing Threshold ◽  
Sensorineural Hearing ◽  
Gap Detection ◽  
Detection Thresholds ◽  
Low Frequencies ◽  
Compressed Speech

This study explored whether the time-compressed speech perception varied with the degree of hearing loss in high-frequency sensorineural hearing loss (HF SNHL) individuals. 65 HF SNHL individuals with different cutoff frequencies were recruited and further divided into mildly, moderately, and/or severely affected subgroups in terms of the averaged thresholds of all frequencies exhibiting hearing loss. Time-compressed speech recognition scores under both quiet and noisy conditions and gap detection thresholds within low frequencies that had normal thresholds were obtained from all patients and compared with data from 11 age-matched individuals with normal hearing threshold at all frequencies. Correlations of the time-compressed speech recognition scores with the extents of HF SNHL and with the 1 kHz gap detection thresholds were studied across all participants. We found that the time-compressed speech recognition scores were significantly affected by and correlated with the extents of HF SNHL. The time-compressed speech recognition scores also correlated with the 1 kHz gap detection thresholds except when the compression ratio of speech was 0.8 under quiet condition. Above all, the extents of HF SNHL were significantly correlated with the 1 kHz gap thresholds.

Effect of Sensorineural Hearing Loss on Loudness Discomfort Level and Most Comfortable Loudness Judgments

1978 ◽  
Vol 21 (4) ◽  
pp. 668-681 ◽  
Author(s):  
Candace Kamm ◽  
Donald D. Dirks ◽  
Max R. Mickey
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Hearing Threshold ◽  
Sensorineural Hearing ◽  
Intersubject Variability ◽  
Adaptive Procedure ◽  
Speech Stimuli ◽  
Wide Range ◽  
Sensorineural Hearing Impairment ◽  
Comfortable Loudness

A simple up-down adaptive procedure was used to estimate the 50% point on the psychometric function for loudness discomfort level (LDL) and the two functions describing the range of most comfortable loudness (MCL) for listeners with sensorineural hearing impairment. For pure tone and speech stimuli, median LDL and MCL levels were observed at relatively constant SPLs for subjects with hearing loss ≤ 50 dB HL and at progressively higher SPLs with further increase in hearing loss. Correlation analysis verified a statistically significant relationship between LDL and magnitude of hearing loss. The nonlinear relationship between LDL and hearing loss together with the large intersubject variability in the data suggest that prediction of LDL from hearing threshold would often be highly inaccurate. These results also demonstrate that averaging LDL data across a group of subjects with a wide range of hearing loss may lead to inaccurate conclusions regarding the effects of sensorineural hearing loss on LDL.

A novel gene for Usher syndrome type 2: mutations in the long isoform of whirlin are associated with retinitis pigmentosa and sensorineural hearing loss

2006 ◽  
Vol 121 (2) ◽  
pp. 203-211 ◽  
Author(s):  
Inga Ebermann ◽  
Hendrik P. N. Scholl ◽  
Peter Charbel Issa ◽  
Elvir Becirovic ◽  
Jürgen Lamprecht ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Retinitis Pigmentosa ◽  
Sensorineural Hearing Loss ◽  
Usher Syndrome ◽  
Sensorineural Hearing ◽  
Syndrome Type ◽  
Novel Gene ◽  
Usher Syndrome Type

A mutation in Wolfram syndrome type 1 gene in a Japanese family with autosomal dominant low-frequency sensorineural hearing loss

2005 ◽  
Vol 125 (11) ◽  
pp. 1189-1194 ◽  
Author(s):  
Yoshihiro Noguchi ◽  
Takatoshi Yashima ◽  
Akio Hatanaka ◽  
Masamichi Uzawa ◽  
Michio Yasunami ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Autosomal Dominant ◽  
Low Frequency ◽  
Wolfram Syndrome ◽  
Sensorineural Hearing ◽  
Syndrome Type ◽  
Japanese Family

Sensorineural Hearing Loss in Chronic Ear Surgery

1977 ◽  
Vol 86 (1) ◽  
pp. 3-8 ◽  
Author(s):  
G. D. L. Smyth
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Clinical Evidence ◽  
Bone Conduction ◽  
Ossicular Chain ◽  
Sensorineural Hearing ◽  
Inflammatory Factors ◽  
Speech Discrimination ◽  
Ear Surgery ◽  
Cochlear Damage

The author's series of 3000 consecutive operations of tympanoplasty from 1960 to 1975 were reviewed in regard to the occurrence of sensorineural hearing loss as a consequence of the surgical procedure. Worsening of bone conduction thresholds by 10 dB through the frequencies 500 to 4000 cps, or a 10% reduction in speech discrimination scores were considered significant. Whereas in transcanal tympanoplasty the incidence of cochlear damage was greater in ears when initially the ossicular chain was incomplete, by contrast in combined approach tympanoplasty the risk was greater when the chain was intact initially. It was concluded that cochlear trauma was usually due to 1) the hydraulic effect of excessive stapes manipulation during the removal of disease, and 2) the development of a perilymph fistula. The unpredictable predisposing threat of cochlear fragility due to genetic and inflammatory factors was emphasized and the poor results of tympanoplasty in tympanosclerosis were underlined. The current methods of treating sensorineural hearing loss after tympanoplasty were enumerated and discussed. It was concluded that although those aimed at improving labyrinthine circulation had theoretical backing, there is as yet little experimental or clinical evidence to support the claims of their protagonists.

scholarly journals A case report of cochlear implantation in patients with osteopetrosis: surgical approaches and auditory results

2021 ◽  
Author(s):  
Masoud Motasaddi Zarandy ◽  
Hakima Abdullah ◽  
Mina Motasaddi Zarandy ◽  
Mohammadreza Firouzifar ◽  
Farzad Moubedshahi
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Cochlear Implantation ◽  
Hearing Threshold ◽  
Sensorineural Hearing ◽  
Surgical Approaches ◽  
Nerve Dysfunction ◽  
Electrode Insertion ◽  
Bilateral Sensorineural Hearing Loss ◽  
The Right

Background: Osteopetrosis (OP) is a rare disease of the skeletal system that can be associated with complications such as bone fracture, nerve dysfunction and deafness due to increased bone density and reduced bone quality. In this regard and due to the challenge that it can cause for cochlear implantation (CI), in this study we aimed to report CI conducted on two patients with OP in Iran. The Case: Patients were two women diagnosed with OP and bilateral sensorineural hearing loss (SNHL) who underwent CI in the right ear. Preoperative PTA showed a hearing threshold decrease of more than 100 dB in both patients. A standard cochleostomy was performed in one patient and endoscopic surgery in the other patient through the external ear canal. One month after surgery, the hearing threshold improved b y 60−90 dB in both patients. No facial nerve palsy or implant extrusion/migration was observed after surgery. Conclusion: Although technically challenging, CI seems to be a safe and effective method to improve the SNHL in patients with OP. The path for electrode insertion should be tailored to meet the conditions and anatomy of patients. Keywords: Cochlear implantation; osteopetrosis; sensorineural hearing loss

Sign in / Sign up

Export Citation Format

Share Document