Redo Microvascular Decompression in a Patient of Resistant Cochleovestibular Nerve Compression Syndrome.

Related Articles

Redo Microvascular Decompression in a Patient of Resistant Cochleovestibular Nerve Compression Syndrome.

Asian J Neurosurg. 2017 Oct-Dec;12(4):735-737

Authors: Bishnoi I, Mewada T, Singh D, Singh H

Abstract
Cochlea-vestibular nerve compression syndrome (CVCS) may present as recurrent attacks of vertigo, dizziness, imbalance, etc. Those patients who do not respond to medical management, are usually managed by "microvascular decompression (MVD) of cochlea-vestibular nerve." The success rate of MVD is not 100% and few patients present with the recurrence of symptoms. We are reporting management of one such resistant case of CVCS. A 40-year-old female patient who was a known case of CVCS, was managed by medical and surgical (MVD) management. She had no relief of symptoms. We did redo MVD of cochlea-vestibular nerve after full evaluation of symptomatology. Patient had complete relief in her symptoms. In failed MVD cases, redo MVD can be performed if patient is still having e/o nerve compression, adhesions on magnetic resonance imaging.

PMID: 29114297 [PubMed]

from #Audiology via xlomafota13 on Inoreader http://ift.tt/2m8Apcn
via IFTTT

The contribution of cochlear implants to postural stability.

Related Articles

The contribution of cochlear implants to postural stability.

Laryngoscope. 2017 Nov 08;:

Authors: Shayman CS, Mancini M, Weaver TS, King LA, Hullar TE

Abstract
OBJECTIVES: To determine whether spatial auditory cues provided by cochlear implants can improve postural balance in adults with severe deafness.
METHODS: In the presence of spatial white noise, 13 adult cochlear implantees wore head and lumbar-mounted inertial sensors while standing in the dark for 30 seconds in two auditory conditions: hearing assistive devices on and off.
RESULTS: Stability was improved with implants on (aided condition) compared to off (unaided condition) with respect to differences in mean head velocity (Cohen's d = 0.912, P = 0.006) as well as to root mean square (RMS) acceleration (Cohen's d = 0.456, P = 0.048). This was particularly evident in measures of anteroposterior accelerations (mean difference = 0.034 m/s(2) ; Cohen's d = 0.612; P = 0.011).
CONCLUSION: The decrease in RMS head acceleration and velocity while wearing cochlear implants suggests that they could be recognized as balance implants in addition to auditory implants. The clinical importance of this finding in various patient populations remains to be determined.
LEVEL OF EVIDENCE: 4. Laryngoscope, 2017.

PMID: 29114889 [PubMed - as supplied by publisher]

from #Audiology via ola Kala on Inoreader http://ift.tt/2m8wVGP
via IFTTT

The contribution of cochlear implants to postural stability.

Related Articles

The contribution of cochlear implants to postural stability.

Laryngoscope. 2017 Nov 08;:

Authors: Shayman CS, Mancini M, Weaver TS, King LA, Hullar TE

Abstract
OBJECTIVES: To determine whether spatial auditory cues provided by cochlear implants can improve postural balance in adults with severe deafness.
METHODS: In the presence of spatial white noise, 13 adult cochlear implantees wore head and lumbar-mounted inertial sensors while standing in the dark for 30 seconds in two auditory conditions: hearing assistive devices on and off.
RESULTS: Stability was improved with implants on (aided condition) compared to off (unaided condition) with respect to differences in mean head velocity (Cohen's d = 0.912, P = 0.006) as well as to root mean square (RMS) acceleration (Cohen's d = 0.456, P = 0.048). This was particularly evident in measures of anteroposterior accelerations (mean difference = 0.034 m/s(2) ; Cohen's d = 0.612; P = 0.011).
CONCLUSION: The decrease in RMS head acceleration and velocity while wearing cochlear implants suggests that they could be recognized as balance implants in addition to auditory implants. The clinical importance of this finding in various patient populations remains to be determined.
LEVEL OF EVIDENCE: 4. Laryngoscope, 2017.

PMID: 29114889 [PubMed - as supplied by publisher]

from #Audiology via ola Kala on Inoreader http://ift.tt/2m8wVGP
via IFTTT

Relations Between Self-Reported Daily-Life Fatigue, Hearing Status, and Pupil Dilation During a Speech Perception in Noise Task.

Objective: People with hearing impairment are likely to experience higher levels of fatigue because of effortful listening in daily communication. This hearing-related fatigue might not only constrain their work performance but also result in withdrawal from major social roles. Therefore, it is important to understand the relationships between fatigue, listening effort, and hearing impairment by examining the evidence from both subjective and objective measurements. The aim of the present study was to investigate these relationships by assessing subjectively measured daily-life fatigue (self-report questionnaires) and objectively measured listening effort (pupillometry) in both normally hearing and hearing-impaired participants. Design: Twenty-seven normally hearing and 19 age-matched participants with hearing impairment were included in this study. Two self-report fatigue questionnaires Need For Recovery and Checklist Individual Strength were given to the participants before the test session to evaluate the subjectively measured daily fatigue. Participants were asked to perform a speech reception threshold test with single-talker masker targeting a 50% correct response criterion. The pupil diameter was recorded during the speech processing, and we used peak pupil dilation (PPD) as the main outcome measure of the pupillometry. Results: No correlation was found between subjectively measured fatigue and hearing acuity, nor was a group difference found between the normally hearing and the hearing-impaired participants on the fatigue scores. A significant negative correlation was found between self-reported fatigue and PPD. A similar correlation was also found between Speech Intelligibility Index required for 50% correct and PPD. Multiple regression analysis showed that factors representing "hearing acuity" and "self-reported fatigue" had equal and independent associations with the PPD during the speech in noise test. Less fatigue and better hearing acuity were associated with a larger pupil dilation. Conclusions: To the best of our knowledge, this is the first study to investigate the relationship between a subjective measure of daily-life fatigue and an objective measure of pupil dilation, as an indicator of listening effort. These findings help to provide an empirical link between pupil responses, as observed in the laboratory, and daily-life fatigue. This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. Copyright (C) 2017 Wolters Kluwer Health, Inc. All rights reserved.

from #Audiology via ola Kala on Inoreader http://ift.tt/2As3gf7
via IFTTT

Three-Dimensional Analysis of the Fundus of the Human Internal Acoustic Canal.

Objectives: Documentation of the nerve components in the internal acoustic canal is essential before cochlea implantation surgery. Interpretations may be challenged by wide anatomical variations of the VIIIth nerve and their ramifications. Malformations may further defy proper nerve identification. Design: Using microcomputed tomography, we analyzed the fundus bone channels in an archival collection of 113 macerated human temporal bones and 325 plastic inner molds. Data were subsequently processed by volume-rendering software using a bony tissue algorithm. Three-dimensional reconstructions were made, and through orthogonal sections, the topographic anatomy was established. Results: The technique provided additional information regarding the anatomy of the nerve foramina/channels of the human fundus region, including variations and destinations. Channel anastomosis were found beyond the level of the fundus. A foramen of the transverse crest was identified. Conclusions: Three-dimensional reconstructions and cropping outlined the bone canals and demonstrated the highly variable VIIIth nerve anatomy at the fundus of the human inner acoustic canal. Myriad channel interconnections suggested an intricate system of neural interactive pathways in humans. Particularly striking was the variable anatomy of the saccule nerve channels. The results may assist in the preoperative interpretation of the VIIIth nerve anatomy. Copyright (C) 2017 Wolters Kluwer Health, Inc. All rights reserved.

from #Audiology via ola Kala on Inoreader http://ift.tt/2yiLucK
via IFTTT

Relations Between Self-Reported Daily-Life Fatigue, Hearing Status, and Pupil Dilation During a Speech Perception in Noise Task.

Objective: People with hearing impairment are likely to experience higher levels of fatigue because of effortful listening in daily communication. This hearing-related fatigue might not only constrain their work performance but also result in withdrawal from major social roles. Therefore, it is important to understand the relationships between fatigue, listening effort, and hearing impairment by examining the evidence from both subjective and objective measurements. The aim of the present study was to investigate these relationships by assessing subjectively measured daily-life fatigue (self-report questionnaires) and objectively measured listening effort (pupillometry) in both normally hearing and hearing-impaired participants. Design: Twenty-seven normally hearing and 19 age-matched participants with hearing impairment were included in this study. Two self-report fatigue questionnaires Need For Recovery and Checklist Individual Strength were given to the participants before the test session to evaluate the subjectively measured daily fatigue. Participants were asked to perform a speech reception threshold test with single-talker masker targeting a 50% correct response criterion. The pupil diameter was recorded during the speech processing, and we used peak pupil dilation (PPD) as the main outcome measure of the pupillometry. Results: No correlation was found between subjectively measured fatigue and hearing acuity, nor was a group difference found between the normally hearing and the hearing-impaired participants on the fatigue scores. A significant negative correlation was found between self-reported fatigue and PPD. A similar correlation was also found between Speech Intelligibility Index required for 50% correct and PPD. Multiple regression analysis showed that factors representing "hearing acuity" and "self-reported fatigue" had equal and independent associations with the PPD during the speech in noise test. Less fatigue and better hearing acuity were associated with a larger pupil dilation. Conclusions: To the best of our knowledge, this is the first study to investigate the relationship between a subjective measure of daily-life fatigue and an objective measure of pupil dilation, as an indicator of listening effort. These findings help to provide an empirical link between pupil responses, as observed in the laboratory, and daily-life fatigue. This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. Copyright (C) 2017 Wolters Kluwer Health, Inc. All rights reserved.

from #Audiology via ola Kala on Inoreader http://ift.tt/2As3gf7
via IFTTT

Three-Dimensional Analysis of the Fundus of the Human Internal Acoustic Canal.

Objectives: Documentation of the nerve components in the internal acoustic canal is essential before cochlea implantation surgery. Interpretations may be challenged by wide anatomical variations of the VIIIth nerve and their ramifications. Malformations may further defy proper nerve identification. Design: Using microcomputed tomography, we analyzed the fundus bone channels in an archival collection of 113 macerated human temporal bones and 325 plastic inner molds. Data were subsequently processed by volume-rendering software using a bony tissue algorithm. Three-dimensional reconstructions were made, and through orthogonal sections, the topographic anatomy was established. Results: The technique provided additional information regarding the anatomy of the nerve foramina/channels of the human fundus region, including variations and destinations. Channel anastomosis were found beyond the level of the fundus. A foramen of the transverse crest was identified. Conclusions: Three-dimensional reconstructions and cropping outlined the bone canals and demonstrated the highly variable VIIIth nerve anatomy at the fundus of the human inner acoustic canal. Myriad channel interconnections suggested an intricate system of neural interactive pathways in humans. Particularly striking was the variable anatomy of the saccule nerve channels. The results may assist in the preoperative interpretation of the VIIIth nerve anatomy. Copyright (C) 2017 Wolters Kluwer Health, Inc. All rights reserved.

from #Audiology via ola Kala on Inoreader http://ift.tt/2yiLucK
via IFTTT