Influence of Speech Rate on Auditory Recognition in Cochlear Implant Users.

Introduction: This study aimed to verify the influence of speech stimulus presentation and speed on auditory recognition in cochlear implant (CI) users with poorer performance.

Methods: The cross-sectional observational study applied auditory speech perception tests to fifteen adults, using three different ways of presenting the stimulus, in the absence of competitive noise: monitored live voice (MLV); recorded speech at typical speed (RSTS); recorded speech at slow speed (RSSS). The scores were assessed using the Percent Sentence Recognition Index (PSRI).

Is the spread of excitation different between adults and children cochlear implants users?

Purpose: While cochlea is adult size at birth, etiologies and bone density may differ between children and adults. Differences in neural response thresholds (tNRT) and the spread of excitation (SOE) width may impact the use of artificial intelligence algorithms in speech processor fitting.

Aim: To identify whether neural response telemetry threshold and spread of excitation width are similar in adults and children.

Hearing rehabilitation with Baha® transcutaneous and percutaneous systems.

Purpose: Longitudinally verify the influence of auditory tonal thresholds obtained with transcutaneous and percutaneous bone-anchored hearing aids on speech perception in individuals with external and/or middle ear malformation and chronic otitis media.

Methods: Observational, retrospective, longitudinal follow-up study of 30 unilateral users of the transcutaneous and percutaneous Baha® system for the collection of secondary data on pure tone thresholds obtained through free field audiometry and sentence recognition threshold in silence and noise in conditions: without the prosthesis; at the time of activation; in the first month of use (post 1); and in the third month (post 2).

Results: There was a significant difference between pure tone thresholds obtained at frequencies of 3 and 4kHz with better results for the percutaneous technique at all evaluation moments.

Complications and audiological results of percutaneous bone-anchored hearing devices.

Objective: To describe the post-operative complications and audiological results related to percutaneous bone-anchored hearing devices.

Methods: A retrospective review was conducted of 44 patients with bilateral conductive or mixed hearing loss who were implanted with unilateral Baha Connect or Ponto devices. A generalised linear model for repeated measurements was used.

Is There Any Correlation between Spread of Excitation Width and the Refractory Properties of the Auditory Nerve in Cochlear Implant Users?

Background: The spread of excitation (SOE) and auditory nerve recovery function (REC) are objective measures recorded by neural response telemetry and may interfere in cochlear implant (CI) stimulation.

Objective: To analyze and correlate SOE with the refractory periods in subjects with pre- and postlingual deafness implanted with different electrode arrays.

Methods: This was a retrospective study of 323 ears separated by perimodiolar or straight arrays and by pre- or postlingually deaf recipients.

Auditory brainstem implant in postmeningitis totally ossified cochleae.

Introduction: An auditory brainstem implant (ABI) is an option for auditory rehabilitation in patients with totally ossified cochleae who cannot receive a conventional cochlear implant.

Objective: To evaluate the outcomes in audiometry and speech perception tests after the implantation of an ABI via the extended retrolabyrinthine approach in patients with postmeningitis hearing loss.

Materials And Methods: Ten patients, including children and adults, with postmeningitis hearing loss and bilateral totally ossified cochleae received an ABI in a tertiary center from 2009 to 2015.

Cochlear Implantation through the Middle Fossa Approach: A Review of Related Temporal Bone Studies and Reported Cases.

 Middle fossa approach has been suggested as an alternative for patients in whom other routes of electrode insertion are contraindicated. Even though there are temporal bone studies about the feasibility of introducing the cochlear implant through the middle fossa, until now, very few studies have described results when cochlear implant surgery is done through this approach.  The objective of this study is to review a series of temporal bone studies related to cochlear implantation through the middle fossa and the results obtained by different surgical groups after cochlear implantation through this approach.

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

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.

Evaluation of residual hearing in cochlear implants candidates using auditory steady-state response.

Conclusion: The correlations between behavioral and auditory steady-state response (ASSR) thresholds were significant at 500, 1000, 2000, and 4000 Hz. ASSR presented high sensitivity and specificity in the detection of residual hearing in cochlear implant candidates when compared with warble-tone audiometry.

Objectives: To assess residual hearing in cochlear implant candidates by comparing the electrophysiological thresholds obtained in dichotic single-frequency ASSR with behavioral thresholds at 500, 1000, 2000, and 4000 Hz.

Speech perception performance of double array multichannel cochlear implant users with standard and duplicated maps in each of the arrays.

Objective: The present investigation evaluated the speech perception performance of patients with ossified cochlea implanted with the 24M Double Array cochlear implant, using standard and duplicated maps in each of the arrays.

Study Design: Retrospective case review.

Setting: Tertiary referral center.

Neurofibromatosis 2: hearing restoration options.

Unlabelled: Neurofibromatosis 2 (NF2) is an autosomal dominant disease in which hearing loss is predominant. Auditory restoration is possible using cochlear implants (CI) or auditory brainstem implant (ABI).

Objective: To assess the auditory results of CI and ABI in NF2 patients and review the literature.

Post-lingual deafness: benefits of cochlear implants vs. conventional hearing aids.

Unlabelled: The technological advances in cochlear implants and processing strategies have enabled subjects affected by severe to profound hearing loss to hear sounds and recognize speech in various different degrees. The variability of hearing outcomes in subjects with post-lingual deafness has been significant and cochlear implant indications have been extended to include an ever larger population.

Objective: This paper aims to look into the groups of post-lingual deafness patients to find where cochlear implants have yielded better outcomes than conventional hearing aids.

Auditory brainstem implant outcomes and MAP parameters: report of experiences in adults and children.

Unlabelled: The auditory brainstem implant (ABI) was first developed to help neurofibromatosis type 2 patients. Recently, its use has been recently extended to adults with non-tumor etiologies and children with profound hearing loss who were not candidates for a cochlear implant (CI). Although the results has been extensively reported, the stimulation parameters involved behind the outcomes have received less attention.

Auditory results from cochlear implants in elderly people.

Unlabelled: According to data from the Brazilian Institute of Geography and Statistics, the elderly population grew 47.8% in the last decade in Brazil. A portion of this population has severe and/or profound hearing loss and do not benefit from conventional hearing aids.

Neural response thresholds in the Nucleus Contour cochlear implant before and after stylet removal.

Conclusion: The study shows that there are differences in the measurement of the action potentials with and without the stylet in the Nucleus Freedom Contour Advance that are higher in the apex than in the base of the cochlea.

Objectives: To determine if there are differences in the intraoperative impedances and in the neural response telemetry threshold values in the Nucleus Freedom Contour Advance before and after stylet removal.

Subjects And Methods: This was a prospective clinical study.

Neural response telemetry in patients with the double-array cochlear implant.

This study aimed to evaluate the neural response in double-array cochlear implant as well as to describe the refractory recovery and the spread of excitation functions. In a prospective study 11 patients were implanted with the double-array cochlear implant. Neural response telemetry (NRT) was performed intra-operatively.

The role of magnetic resonance imaging in the postoperative management of cholesteatomas.

Unlabelled: Conventional CT and MRI scans have low specificity when it comes to differentiating granulation tissue from relapsing cholesteatoma.

Aim: this paper aims to analyze the use of DWI and delayed post-contrast T1-weighed imaging in the detection of recurring cholesteatomas.

Materials And Method: this is a cross-sectional prospective study that looked at 17 cholesteatoma patients postoperatively.

Psychoacoustic dynamic range and cochlear implant speech-perception performance in nucleus 22 users.

Background: Cochlear implant speech processors compress a wide acoustical dynamic range of sounds into a smaller electrical dynamic range. Some patients show wider electrical dynamic ranges than others and most of them have good speech perception performance. The knowledge of the average psycho-acoustical dynamic range in adults will help the audiologist program children who do not give reliable responses.

[Oral language of children with five years of experience using [corrected] cochlear implant].

Background: Cochlear implant (CI) in children.

Aim: 1) to delineate a profile of receptive and expressive verbal language of children who have been using cochlear implant for five years and five years and eleven months; 2) to verify the influence of time of auditory sensorial privation in the receptive and expressive verbal language of these children.

Method: 19 children users of CI with auditory deficiency acquired before language development, who have been using CI for 5y - 5y11m and who have an average time of sensorial privation of 3y (standard deviation of 1 year).

Clinical and tympanometric findings in repeated recreational scuba diving.

Background: Due to the condition known as middle ear squeeze, scuba diving has become one of the main causes of barotrauma, and the acute form of this condition has been relatively well established. However, there are few reports available on clinical or laboratory findings in divers who practise repeated diving. The objective of the present study was to assess the otological effects of repeated dives.

Neural response telemetry measures in patients implanted with Nucleus 24.

Unlabelled: Cochlear implantation has been recommended for children under 24 months of age. The use of objective measures is needed to help speech processor programming. The electrically evoked compound potential (EAP), which can be assessed by neural response telemetry (NRT), is one of those objective measures.

[Anatomical references in auditory brainstem implant surgery].

uditory brainstem implant (ABI) is an option for deaf patients who do not have the whole auditory pathways preserved. The surgery, because of its anatomical and functional complexity, requires specific training of the surgeon in an anatomy lab. : To study the surgical anatomy of the auditory brainstem implant surgery.

The role of the middle fossa approach in the management of traumatic facial paralysis.

There are several controversial aspects to the management of traumatic facial paralysis. One of these involves the precise nature of surgical intervention once the decision to operate has been made. Between June 1, 1984, and June 30, 1993, we surgically treated 220 cases of traumatic facial paralysis with good cochlear reserve by decompressing the tympanic and mastoid segments via a transmastoid approach followed by decompression of the geniculate ganglion and the distal half of the labyrinthine segment via a middle fossa approach.