scholarly journals New Criteria of Indication and Selection of Patients to Cochlear Implant

2011 ◽  
Vol 2011 ◽  
pp. 1-13 ◽  
Author(s):  
André L. L. Sampaio ◽  
Mercêdes F. S. Araújo ◽  
Carlos A. C. P. Oliveira
Keyword(s):  
Hearing Loss ◽  
Cochlear Implant ◽  
Neural Plasticity ◽  
Surgical Techniques ◽  
Hearing Preservation ◽  
Electrode Arrays ◽  
Low Frequencies ◽  
Unilateral Deafness ◽  
Selection Of Patients ◽  
Selection Of

Numerous changes continue to occur in cochlear implant candidacy. In general, these have been accompanied by concomitant and satisfactory changes in surgical techniques. Together, this has advanced the utility and safety of cochlear implantation. Most devices are now approved for use in patients with severe to profound unilateral hearing loss rather then the prior requirement of a bilateral profound loss. Furthermore, studies have begun utilizing short electrode arrays for shallow insertion in patients with considerable low-frequency residual hearing. This technique will allow the recipient to continue to use acoustically amplified hearing for the low frequencies simultaneously with a cochlear implant for the high frequencies. The advances in design of, and indications for, cochlear implants have been matched by improvements in surgical techniques and decrease in complications. The resulting improvements in safety and efficacy have further encouraged the use of these devices. This paper will review the new concepts in the candidacy of cochlear implant. Medline data base was used to search articles dealing with the following topics: cochlear implant in younger children, cochlear implant and hearing preservation, cochlear implant for unilateral deafness and tinnitus, genetic hearing loss and cochlear implant, bilateral cochlear implant, neuropathy and cochlear implant and neural plasticity, and the selection of patients for cochlear implant.

scholarly journals Current criteria for selecting cochlear implant in deaf patients: a review

2021 ◽  
Vol 9 (1) ◽  
pp. 50
Author(s):  
Santosh Kumar Swain
Keyword(s):  
Hearing Loss ◽  
Cochlear Implant ◽  
Neural Plasticity ◽  
Cochlear Implantation ◽  
Surgical Techniques ◽  
Low Frequency ◽  
Hearing Preservation ◽  
Electrode Arrays ◽  
Profound Hearing Loss ◽  
Unilateral Deafness

Cochlear implantation is indicated in patients with severe to profound hearing loss that cannot be adequately treated by other auditory rehabilitation measures. The definitive indication of cochlear implantation is made on the basis of an extensive interdisciplinary clinical, audiological, radiological, and psychological diagnostic work-up. There are numerous changes are happening in cochlear implant candidacy. These have been associated with concomitant changes in surgical techniques, which enhanced the utility and safety of cochlear implantation. Currently, cochlear implants are approved for individuals with severe to profound unilateral hearing loss rather than previously needed for bilateral profound hearing loss. Studies have begun using the short electrode arrays for shallow insertion in patients with low-frequency residual hearing loss. The advancement in designs of the cochlear implant along with improvements in surgical techniques reduce the complications and result in the safety and efficacy of the cochlear implant which further encourages the use of these devices. This review article aims to discuss the new concepts in the candidacy of the cochlear implant, cochlear implant in younger children and hearing preservation, a cochlear implant for unilateral deafness, bilateral cochlear implant, and cochlear implant with neural plasticity and selection of patients for the cochlear implant.

Preservation of residual hearing following cochlear implantation: comparison between three surgical techniques

2007 ◽  
Vol 122 (3) ◽  
pp. 246-252 ◽  
Author(s):  
S Berrettini ◽  
F Forli ◽  
S Passetti
Keyword(s):  
Cochlear Implant ◽  
Cochlear Implantation ◽  
Surgical Techniques ◽  
Electrode Array ◽  
Lateral Wall ◽  
Hearing Preservation ◽  
Acoustic Stimulation ◽  
Residual Hearing ◽  
Electrode Arrays ◽  
Electrode Insertion

AbstractThe preservation of residual hearing is becoming a high priority in cochlear implant surgery. It allows better speech understanding and ensures long-lasting and stable performance; it also allows the possibility, in selected cases, of combining electro-acoustic stimulation in the same ear.We present the results of a retrospective study of the conservation of residual hearing in three different groups of patients who had undergone cochlear implantation using three different cochlear implant electrode arrays, combined with three different surgical techniques for the cochleostomy. The study aimed to evaluate which approach allowed greater preservation of residual hearing.The best residual hearing preservation results (i.e. preservation in 81.8 per cent of patients) were achieved with the Contour Advance electrode array, using the Advance Off-Stylet technique and performing a modified anterior inferior cochleostomy; this combination enabled reduced trauma to the lateral wall of the cochlea during electrode insertion.

Quail sono i limiti attuali dell'indicazione alla prostatectomia radicale?

1995 ◽  
Vol 62 (4) ◽  
pp. 549-552
Author(s):  
L. Zappalà ◽  
R. Bertè ◽  
S. Callari ◽  
P. Guaitoi ◽  
G. Mazza
Keyword(s):  
Prognostic Factors ◽  
Radical Prostatectomy ◽  
Surgical Techniques ◽  
Indication For Surgery ◽  
Biological Behaviour ◽  
Progressive Improvement ◽  
First Choice ◽  
Selection Of Patients ◽  
Selection Of ◽  
Extended Indication

Progressive improvement in surgical techniques has considerably reduced complications subsequent to radical prostatectomy, which has been considered first choice treatment for about a decade. At the same time two lines of thought have been established regarding the more or less extended indication for surgery. Today's greater knowledge concerning the biological behaviour of the neoplasm and the significance of the prognostic factors should stimulate reflection about the selection of patients for more effective surgery.

Patterns of Long-term Hearing Loss in Hearing Preservation Cochlear Implant Surgery

2016 ◽  
Vol 37 (5) ◽  
pp. 478-486 ◽  
Author(s):  
Kavita Dedhia ◽  
Tina Worman ◽  
Margaret A. Meredith ◽  
Jay T. Rubinstein
Keyword(s):  
Hearing Loss ◽  
Cochlear Implant ◽  
Hearing Preservation ◽  
Implant Surgery ◽  
Cochlear Implant Surgery

scholarly journals Hearing Preservation in Cochlear Implant Surgery

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Priscila Carvalho Miranda ◽  
André Luiz Lopes Sampaio ◽  
Rafaela Aquino Fernandes Lopes ◽  
Alessandra Ramos Venosa ◽  
Carlos Augusto Costa Pires de Oliveira
Keyword(s):  
Cochlear Implant ◽  
Cochlear Implantation ◽  
Surgical Techniques ◽  
Low Frequency ◽  
Hearing Preservation ◽  
Acoustic Stimulation ◽  
Electrode Design ◽  
High Frequency Region ◽  
Electric Acoustic Stimulation ◽  
New Treatment

In the past, it was thought that hearing loss patients with residual low-frequency hearing would not be good candidates for cochlear implantation since insertion was expected to induce inner ear trauma. Recent advances in electrode design and surgical techniques have made the preservation of residual low-frequency hearing achievable and desirable. The importance of preserving residual low-frequency hearing cannot be underestimated in light of the added benefit of hearing in noisy atmospheres and in music quality. The concept of electrical and acoustic stimulation involves electrically stimulating the nonfunctional, high-frequency region of the cochlea with a cochlear implant and applying a hearing aid in the low-frequency range. The principle of preserving low-frequency hearing by a “soft surgery” cochlear implantation could also be useful to the population of children who might profit from regenerative hair cell therapy in the future. Main aspects of low-frequency hearing preservation surgery are discussed in this review: its brief history, electrode design, principles and advantages of electric-acoustic stimulation, surgical technique, and further implications of this new treatment possibility for hearing impaired patients.

scholarly journals Automatic Cochlear Duct Length Estimation for Selection of Cochlear Implant Electrode Arrays

2017 ◽  
Vol 38 (3) ◽  
pp. 339-346 ◽  
Author(s):  
Alejandro Rivas ◽  
Ahmet Cakir ◽  
Jacob B. Hunter ◽  
Robert F. Labadie ◽  
M. Geraldine Zuniga ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Electrode Arrays ◽  
Cochlear Duct ◽  
Length Estimation ◽  
Cochlear Duct Length ◽  
Selection Of

ALGORITHM FOR EARLY DIAGNOSIS AND PREVENTION OF PROFESSIONAL SENSORINEURAL HEARING LOSS

2021 ◽  
Author(s):  
E.A. Preobrazhenskaya ◽  
◽  
A.V. Sukhova ◽  
E.N. Kryuchkova
Keyword(s):  
Hearing Loss ◽  
Early Diagnosis ◽  
Sensorineural Hearing Loss ◽  
Working Conditions ◽  
Preventive Measures ◽  
Hearing Preservation ◽  
Hearing Research ◽  
Auditory Analyzer ◽  
Risk Categorization ◽  
Selection Of

Abstract: The aim of the study is to develop an algorithm for early diagnosis and prevention of professional neurosensory hearing elasticity (PNST). A comprehensive audiological survey of 600 miners aged 37 to 58, with 10 to 35 years of experience in noise conditions above the PDU for 7-21 dBA (class 3.1-3.3) was carried out. Based on the studies, an algorithm of early diagnosis and prevention of PNST, consisting of 3 blocks: I - hygienic (assessment of working conditions and risk categorization), II - clinical diagnostic, based on modern audiological methods of hearing research with the selection of diagnostic markers of risk of PNST, III - preventive, including the development of individual hearing preservation programs. The developed algorithm allows in 65-75% of cases to identify changes in the auditory analyzer at the preclinical stage, to clarify the nature and localization of the auditory analyzer, which is important in the development of therapeutic and preventive measures.

Conductive hearing loss associated with pressure equalization tubes

2000 ◽  
Vol 122 (3) ◽  
pp. 349-351 ◽  
Author(s):  
Scott A. Estrem ◽  
Pete S. Batra
Keyword(s):  
Hearing Loss ◽  
Conductive Hearing Loss ◽  
Small Diameter ◽  
Tube Placement ◽  
Pressure Equalization ◽  
Cigarette Paper ◽  
Conductive Hearing ◽  
Selection Of Patients ◽  
Ear Effusion ◽  
Selection Of

Pressure equalization (PE) tube placement traditionally has been used to lessen conductive hearing loss with chronic middle ear effusion. It is assumed that the small diameter of the tube should not interfere with the conduction of sound. In this article we present 5 patients in whom placement of a PE tube resulted in significantly worse conductive hearing. Occlusion of the PE tube with cigarette paper or Gelfoam improved hearing, as documented with audiometry. The average conductive hearing losses attributable to the ventilation tube for this series of patients were 22, 17, 15, 13, 4, and 10 dB at the frequencies of 250, 500, 1000, 2000, 4000, and 8000 Hz, respectively. This amount of change attributable to PE tubes in this small selection of patients is much greater than would be commonly appreciated. We conclude that the opening in the tympanic membrane provided by PE tubes can potentially result in a significant conductive hearing loss. Discussion includes those conditions in which reduced hearing may be more likely to occur.

scholarly journals Evaluation of Intracochlear Trauma Caused by Insertion of Cochlear Implant Electrode Arrays through Different Quadrants of the Round Window

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Graziela de Souza Queiroz Martins ◽  
Rubens Vuono Brito Neto ◽  
Robinson Koji Tsuji ◽  
Eloisa Maria Mello Santiago Gebrim ◽  
Ricardo Ferreira Bento
Keyword(s):  
Cochlear Implant ◽  
Round Window ◽  
Electrode Array ◽  
Hearing Preservation ◽  
Round Window Membrane ◽  
Residual Hearing ◽  
Electrode Arrays ◽  
Minimal Trauma ◽  
Electrode Insertion ◽  
Temporal Bones

Hypothesis. This study aimed to evaluate whether there is a difference in the degree of intracochlear trauma when the cochlear implant electrode arrays is inserted through different quadrants of the round window membrane.Background. The benefits of residual hearing preservation in cochlear implant recipients have promoted the development of atraumatic surgeries. Minimal trauma during electrode insertion is crucial for residual hearing preservation.Methods. In total, 25 fresh human temporal bones were subjected to mastoidectomy and posterior tympanotomy. The cochlear implant electrode array was inserted through the anterosuperior quadrant of the round window membrane in 50% of the bones and through the anteroinferior quadrant in the remaining 50%. The temporal bones were dehydrated, embedded in epoxy, serially polished, stained, viewed through a stereomicroscope, and photographed with the electrode arraysin situ. The resulting images were analyzed for signs of intracochlear trauma.Results. Histological examinations revealed varying degrees of damage to the intracochlear structures, although the incidence and severity of intracochlear trauma were not influenced by the quadrant of insertion.Conclusions. The incidence and severity of intracochlear trauma were similar in all samples, irrespective of electrode array insertion through the anterosuperior or anteroinferior quadrant of the round window membrane.

Conductive Hearing Loss Associated with Pressure Equalization Tubes

2000 ◽  
Vol 122 (3) ◽  
pp. 349-351 ◽  
Author(s):  
Scott A. Estrem ◽  
Pete S. Batra
Keyword(s):  
Hearing Loss ◽  
Conductive Hearing Loss ◽  
Small Diameter ◽  
Tube Placement ◽  
Pressure Equalization ◽  
Cigarette Paper ◽  
Conductive Hearing ◽  
Selection Of Patients ◽  
Ear Effusion ◽  
Selection Of

Pressure equalization (PE) tube placement traditionally has been used to lessen conductive hearing loss with chronic middle ear effusion. It is assumed that the small diameter of the tube should not interfere with the conduction of sound. In this article we present 5 patients in whom placement of a PE tube resulted in significantly worse conductive hearing. Occlusion of the PE tube with cigarette paper or Gelfoam improved hearing, as documented with audiometry. The average conductive hearing losses attributable to the ventilation tube for this series of patients were 22, 17, 15, 13, 4, and 10 dB at the frequencies of 250, 500, 1000, 2000, 4000, and 8000 Hz, respectively. This amount of change attributable to PE tubes in this small selection of patients is much greater than would be commonly appreciated. We conclude that the opening in the tympanic membrane provided by PE tubes can potentially result in a significant conductive hearing loss. Discussion includes those conditions in which reduced hearing may be more likely to occur.

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