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BioMed Research International 2015
Topics: Cochlear Implantation; Cochlear Implants; Hearing Loss; Humans; Monitoring, Intraoperative; Surgery, Computer-Assisted
PubMed: 26240825
DOI: 10.1155/2015/683967 -
Current Biology : CB Sep 2014Cochlear implants are the first example of a neural prosthesis that can substitute a sensory organ: they bypass the malfunctioning auditory periphery of profoundly-deaf...
Cochlear implants are the first example of a neural prosthesis that can substitute a sensory organ: they bypass the malfunctioning auditory periphery of profoundly-deaf people to electrically stimulate their auditory nerve. The history of cochlear implants dates back to 1957, when Djourno and Eyriès managed, for the first time, to elicit sound sensations in a deaf listener using an electrode implanted in his inner ear. Since then, considerable technological and scientific advances have been made. Worldwide, more than 300,000 deaf people have been fitted with a cochlear implant; it has become a standard clinical procedure for born-deaf children and its success has led over the years to relaxed patient selection criteria; for example, it is now not uncommon to see people with significant residual hearing undergoing implantation. Although the ability to make sense of sounds varies widely among the implanted population, many cochlear implant listeners can use the telephone and follow auditory-only conversations in quiet environments.
Topics: Auditory Perception; Cochlear Implantation; Cochlear Implants; Hearing; Humans
PubMed: 25247367
DOI: 10.1016/j.cub.2014.06.053 -
Canadian Family Physician Medecin de... Oct 2022A young infant seen in our practice was diagnosed with profound congenital hearing loss. Their parents want to pursue cochlear implant surgery for their child, but they...
QUESTION
A young infant seen in our practice was diagnosed with profound congenital hearing loss. Their parents want to pursue cochlear implant surgery for their child, but they are concerned about language acquisition before and after the surgery. What should they know about the procedure, and how can they improve language outcomes?
ANSWER
Congenital hearing loss is often identified on newborn screening hearing tests. Cochlear implants may lead to overall improved spoken language skills among children with profound hearing loss. Some factors associated with successful language acquisition in children after cochlear implant surgery include having the procedure at an earlier age and family engagement in early intervention programs. Learning sign language before cochlear implant surgery may improve subsequent language outcomes and support the child's cognitive and socioemotional success.
Topics: Child; Cochlear Implantation; Cochlear Implants; Deafness; Hearing Aids; Humans; Infant; Infant, Newborn; Language Development
PubMed: 36241402
DOI: 10.46747/cfp.6810737 -
Saudi Medical Journal Dec 2022To investigate the incidence, risk factors, and management of meningitis in cochlear implant (CI)users.
OBJECTIVES
To investigate the incidence, risk factors, and management of meningitis in cochlear implant (CI)users.
METHODS
A systematic review was carried out using PubMed, Scopus, Web of Science, and Cochrane Central Register. Articles were considered relevant if reported any data on incidence, clinical presentations, the role of vaccination, management, and outcomes of meningitis after CI.
RESULTS
A total of 32 studies including 27358 patients were included, and meningitis was reported in only 202 cases. Meningitis occurred in the period ranging from 1 day to 72 months after CI. A total of 55 patients received the pneumococcal vaccine, while 20 patients received the type B vaccine. A large number of participants (n=47) had associated anatomical malformations, while 62 had otitis media before meningitis. A total of 24 cases required revision surgery along with medical treatment. Full recovery was the outcome reported by the included studies in 19 patients.
CONCLUSION
Cochlear implant users seem to be at possible risk of bacterial meningitis at any time after implantation, especially in the presence of risk factors, such as otitis media and anatomical malformations of the cochlea.
Topics: Humans; Cochlear Implants; Cochlear Implantation; Meningitis, Bacterial; Otitis Media; Vaccination
PubMed: 36517062
DOI: 10.15537/smj.2022.43.12.20220426 -
Cold Spring Harbor Perspectives in... Aug 2019When hearing fails, cochlear implants (CIs) provide open speech perception to most of the currently half a million CI users. CIs bypass the defective sensory organ and... (Review)
Review
When hearing fails, cochlear implants (CIs) provide open speech perception to most of the currently half a million CI users. CIs bypass the defective sensory organ and stimulate the auditory nerve electrically. The major bottleneck of current CIs is the poor coding of spectral information, which results from wide current spread from each electrode contact. As light can be more conveniently confined, optical stimulation of the auditory nerve presents a promising perspective for a fundamental advance of CIs. Moreover, given the improved frequency resolution of optical excitation and its versatility for arbitrary stimulation patterns the approach also bears potential for auditory research. Here, we review the current state of the art focusing on the emerging concept of optogenetic stimulation of the auditory pathway. Developing optogenetic stimulation for auditory research and future CIs requires efforts toward viral gene transfer to the neurons, design and characterization of appropriate optogenetic actuators, as well as engineering of multichannel optical implants.
Topics: Animals; Auditory Pathways; Cochlear Implantation; Cochlear Implants; Deafness; Humans; Optogenetics; Prosthesis Design; Speech Perception
PubMed: 30323016
DOI: 10.1101/cshperspect.a033225 -
Acta Otorhinolaryngologica Italica :... Dec 2021Early diagnosis of cochlear implant failures (CIF) is a critical part of post-implantation follow-up. Diagnosis is challenging and time consuming. Our study aimed to...
OBJECTIVE
Early diagnosis of cochlear implant failures (CIF) is a critical part of post-implantation follow-up. Diagnosis is challenging and time consuming. Our study aimed to describe diagnoses of CIF with emphasis on soft failures (SF), focusing on symptoms, time from symptoms to replacement, and differences between SF and hard failures (HF).
METHODS
A retrospective review of medical records in a tertiary care referral paediatric medical centre including all patients who experienced CIF during 2000-2020.
RESULTS
Of 1004 CI surgeries, 72 (7.2%) cases of CIF were included, of which 60 CIF were in children (mean age 3.1 years). Twenty-five cases were due to HF, 26 SF, and 21 due to medical reasons. Patients with SF were more likely to present with headache, dizziness, or tinnitus compared with those with HF. Facial stimulation and disconnections were more common in implants from Advanced Bionics, dizziness and tinnitus in Cochlear, and poor progression in Med-El. Mean time from symptoms to implant replacement surgery was longer in cases with SF compared to HF.
CONCLUSIONS
SF poses a diagnostic challenge. Symptoms such as headache, dizziness, and tinnitus are common. Diagnosis of failure should often be based on assessments of the implant and rehabilitation teams.
Topics: Child; Child, Preschool; Cochlear Implantation; Cochlear Implants; Headache; Humans; Retrospective Studies
PubMed: 34928268
DOI: 10.14639/0392-100X-N1583 -
Saudi Medical Journal Feb 2021To discuss our experience with managing cochlear implant cases that required revision surgery.
OBJECTIVES
To discuss our experience with managing cochlear implant cases that required revision surgery.
METHODS
A retrospective case series study including data from 922 cochlear implant patients at an academic tertiary center was evaluated retrospectively. All patients who underwent revision cochlear implant (CI) surgery between January 2011 and July 2017 were included. The following data were collected: patient demographic data, details on the first implant, reasons for the revision, duration from initial implantation to revision, type of device, and management.
RESULTS
Out of 922 CI patients, 37 (4%) underwent revision surgery, comprising 33 children and 4 adults. The most common reason for revision surgery, at 28/37 cases (75.6%), was device failure. Surgical and medical aetiologies were responsible for 9/37 (24.3%) revisions. The mean duration from the initial implantation to the revision surgery was 29 months.
CONCLUSION
Revision CI surgery is not uncommon after initial implantation. Cochlear implant programs must implement long-term follow-up processes for CI users. Whenever a patient's rehabilitated performance regresses, the cause should be investigated to determine whether subsequent reimplantation is necessary.
Topics: Adult; Child; Cochlear Implantation; Cochlear Implants; Humans; Prosthesis Failure; Reoperation; Retrospective Studies
PubMed: 33563744
DOI: 10.15537/smj.2021.2.25647 -
Ugeskrift For Laeger Nov 2020A cochlear implant is an electrode, which is implanted in the inner ear to establish or re-establish hearing. Based on estimates on the prevalence of undertreated... (Review)
Review
A cochlear implant is an electrode, which is implanted in the inner ear to establish or re-establish hearing. Based on estimates on the prevalence of undertreated bilateral profound hearing loss, the number of adult people receiving a cochlear implant is low. In addition, many people with residual acoustic hearing or people with single-sided deafness could benefit from a cochlear implant. Due to the recent expansions in the indications for cochlear implantation and the unmet need for hearing improvement among the adult population, more focus on referring these patients to audiological cochlear implantation workup is recommended, as argued in this review.
Topics: Adult; Cochlear Implantation; Cochlear Implants; Hearing Loss, Sensorineural; Humans
PubMed: 33215588
DOI: No ID Found -
Hearing Research Sep 2017Voice emotion is a fundamental component of human social interaction and social development. Unfortunately, cochlear implant users are often forced to interface with... (Review)
Review
Voice emotion is a fundamental component of human social interaction and social development. Unfortunately, cochlear implant users are often forced to interface with highly degraded prosodic cues as a result of device constraints in extraction, processing, and transmission. As such, individuals with cochlear implants frequently demonstrate significant difficulty in recognizing voice emotions in comparison to their normal hearing counterparts. Cochlear implant-mediated perception and production of voice emotion is an important but relatively understudied area of research. However, a rich understanding of the voice emotion auditory processing offers opportunities to improve upon CI biomedical design and to develop training programs benefiting CI performance. In this review, we will address the issues, current literature, and future directions for improved voice emotion processing in cochlear implant users.
Topics: Acoustic Stimulation; Cochlear Implantation; Cochlear Implants; Electric Stimulation; Emotions; Humans; Persons With Hearing Impairments; Speech Acoustics; Speech Perception; Voice Quality
PubMed: 28088500
DOI: 10.1016/j.heares.2017.01.006 -
Journal of the Association For Research... Aug 2023Patients with bilateral vestibulopathy suffer from a variety of complaints, leading to a high individual and social burden. Available treatments aim to alleviate the... (Review)
Review
Patients with bilateral vestibulopathy suffer from a variety of complaints, leading to a high individual and social burden. Available treatments aim to alleviate the impact of this loss and improve compensatory strategies. Early experiments with electrical stimulation of the vestibular nerve in combination with knowledge gained by cochlear implant research, have inspired the development of a vestibular neuroprosthesis that can provide the missing vestibular input. The feasibility of this concept was first demonstrated in animals and later in humans. Currently, several research groups around the world are investigating prototype vestibular implants, in the form of vestibular implants as well as combined cochlear and vestibular implants. The aim of this review is to convey the presentations and discussions from the identically named symposium that was held during the 2021 MidWinter Meeting of the Association for Research in Otolaryngology, with researchers involved in the development of vestibular implants targeting the ampullary nerves. Substantial advancements in the development have been made. Yet, research and development processes face several challenges to improve this neuroprosthesis. These include, but are not limited to, optimization of the electrical stimulation profile, refining the surgical implantation procedure, preserving residual labyrinthine functions including hearing, as well as gaining regulatory approval and establishing a clinical care infrastructure similar to what exists for cochlear implants. It is believed by the authors that overcoming these challenges will accelerate the development and increase the impact of a clinically applicable vestibular implant.
Topics: Animals; Humans; Cochlear Implantation; Vestibule, Labyrinth; Cochlear Implants; Bilateral Vestibulopathy; Cochlea
PubMed: 37516679
DOI: 10.1007/s10162-023-00906-1