Clinical Research Directory

Safety, Tolerability, Efficacy of EA0010 in OTOF Patients With CI

This study will evaluate the safety, tolerability, and efficacy of EA0010 injection in patients with OTOF-related hearing loss who have already undergone cochlear implantation. Conventional gene therapy generally excludes cochlear implant recipients, based on the concern that the electrode array may compromise the reparative potential of inner ear cells. To further address this clinical issue, the present study is designed to enroll cochlear implant users and administer a single intratympanic injection of EA0010 through the stapes annular ligament into the implanted cochlea. One subject is planned to be enrolled, and post-administration assessments of both safety and efficacy will be performed.

Retrospectively Investigating Longitudinal Outcomes in MED-EL SONATA 2 Cochlear Implant Recipients.

MED-EL Cochlear Implants (CI) provide auditory sensations via electrical stimulation of the auditory pathways for severely to profoundly hearing-impaired individuals who obtain little or no benefit from acoustic amplification in the best aided condition. However, there is only few evidence from large long-term observational studies available to gain knowledge on clinical effectiveness of cochlear implants. With continued pressure on healthcare system budgets, there is an increasing demand for evidence-based research that demonstrates an intervention is effective in the real-world environment across large and diverse populations. Currently, there is a paucity of data concerning the long-term outcomes of subjects implanted with a SONATA 2 cochlear implant from representative samples of the population. This retrospective study aims at analyzing SONATA 2 cochlear implant data from clinical routine.

Investigation of a Device to Deliver Intra-Operative Therapeutic Hypothermia for Hearing Preservation in Cochlear Implantation

The goal of this interventional clinical study is to investigate the use of mild therapeutic hypothermia for preservation of residual hearing in cochlear implant surgery. The main questions the trial aims to answer are: 1. Is mild therapeutic hypothermia safe for use during cochlear implantation? 2. Is mild therapeutic hypothermia effective at preserving residual hearing after cochlear implantation? Participants will receive mild therapeutic hypothermia therapy during cochlear implant surgery. Researchers will compare results from those receiving the therapy to those from a control group (individuals receiving no therapy).

Perceptual Adaptation Following Cochlear Implantation (Aim 3a)

The goal of this study is to study the adaptation process in newly implanted Single-Sided Deaf Cochlear Implant (SSD-CI) users. Subjects will use four frequency maps for the first month after CI activation. One of these maps will be standard of care and the other three will have higher low frequency edges than the standard of care default maps. These maps will alternate daily during the first month (with exceptions made for situations when the subject is allowed to use a preferred map rather than the map predetermined for use that day), and after that point each subject will make a selection at the beginning of the week to compare all four maps and decide which one to use at the beginning of the following week. The goal of this study is to investigate how reducing place-pitch mismatch in SSD CI users affects 1) sound quality, 2) device use, and 3) speech perception.

Same-Day Cochlear Implant Activation (SDA-CI)

This randomized controlled study investigates whether activating a cochlear implant on the day of surgery (same-day activation) leads to faster stabilization of cochlear implant programming compared with the current standard practice of activation approximately 14 days after surgery. Adult cochlear implant recipients at Aarhus University Hospital will be randomly assigned to either same-day activation or standard activation. The study will evaluate electrode impedance development, time to a stable cochlear implant map, changes in programming parameters, hearing outcomes, tinnitus, quality of life, rehabilitation progress, and safety. The purpose of the study is to determine whether earlier activation can facilitate faster auditory rehabilitation and optimization of cochlear implant settings without increasing complications or patient discomfort.

Comparison of Performance Using MED-EL Automatic Sound Management

This study will evaluate the speech perception ability of adult cochlear implant users in background noise using various MED-EL Automatic Sound Management (ASM) features.

Spatial Hearing Rehabilitation in Noise for Bilateral Cochlear Implant Children

In recent decades, there was a great expansion for bilateral cochlear implantation (bCI) in children, leading to an improvement of their quality of life. However, spatial hearing skills of bCI children remain limited, even for children with the best speech understanding outcomes. Recent studies have brought new insights in spatial hearing by using virtual reality to record spatial hearing performance in 3D and the impact of active listening (i.e. free head exploration during sound emission): all bCI children showed spatial hearing difficulties related to front-back confusions and distance perception, which partly resulted from the reduction in auditory cues by the CI settings. However, bCI children notably improved under conditions of active listening, suggesting that interaction with environment could represent a rehabilitation entry strategy to help bCI users when faced with complex auditory scenes in daily life. The ability to localize sounds in space (spatial hearing) and the ability to understand speech in noise are both auditory skills essential in daily interactions with our physical and social environment and, when deficient, limit the quality of life. However, there is no specific rehabilitation program devoted to spatial hearing which could help children face their daily difficulties in noisy environments. Even though technological advances are crucial to improve the restoration of hearing functions, these improvements are also highly dependent on rehabilitation strategies to train our auditory brain to face the restoration of binaural processing or to decode the impoverished spectral information delivered by the CI. The investigators recently performed a pilot study in bCI adults who attended 8 training sessions of spatial hearing, involving a sensorial and interactive immersive environment (i.e. virtual reality with auditory and visual environment during an active listening task). All participants benefitted of the training, in terms of spatial hearing performance, speech understanding in noise, and quality of life. All early benefits were maintained 1 month after the end of training. The investigators aim to propose a spatial hearing rehabilitation program (KidTrain) adapted to bCI children from 8 to 17 years old, based on their previous pilot study on bCI adults. Their tool makes it possible to propose rehabilitation programs adapted to the performance and expectations of each child. This program will manipulate both the ambient sound with varying background noise to simulate daily life environments (i.e. making auditory detection more or less complex), and also manipulate virtual immersive environment (i.e. giving more or less relevant visual cues related to real sound location). The KidTrain's effects will be measured with different auditory tests performed in noisy environments. The investigators will also include Normal Hearing (NH) children as age-matched control groups to perform the auditory tests in noise. These NH groups will also bring new insights of spatial hearing maturation in complex auditory environments. Based on our preliminary data in bCI adults, this 'KidTrain program' should improve spatial hearing skills of bCI children, speech comprehension in noise and quality of life in many daily situations. Virtual reality (VR) has recently proven its effectiveness in rehabilitation in many domains and recent studies have shown that this technology has its place in the auditory evaluation and adaptation of spatial hearing. This VR approach takes advantage of the control of multisensory cues of our environment (audio and visual) during a spatial hearing task, and allows the subject to interact with his environment according to his hearing abilities and needs (i.e. active listening). Based on their previous study conducted in bCI and NH children and on their spatial training study conducted with bCI adults, the investigators wish to respond to the growing need of spatial hearing rehabilitation for bCI children. To achieve this goal, the investigators will improve the spatial training program by adding different immersive environment in VR with various background noise to simulate daily life environments. This approach will also be a great opportunity to characterize the developmental stages of spatial hearing maturation in NH children. Thus, this project will propose new axes of speech therapy on the Orthophonie \& Surdité platform, combining spatial hearing and speech understanding in noise. This innovative and adapted rehabilitation program will lead the speech therapist to propose more adapted and effective rehabilitations for the daily life of deaf children.

Cochlear Implant Recipients: Comprehensive Longitudinal Evaluation

This study aims to assess hearing and speech perception, as well as quality of life, in deaf patients of all ages before and after cochlear implantation, and to explore differences across age groups and treatment subtypes, thereby providing evidence for personalized hearing and speech rehabilitation.

Comparative Analysis of Hearing Outcomes: Robotic vs. Manual Insertion of Cochlear Implants

This research study is evaluating two different methods of cochlear implant (CI) insertion - robotic-assisted insertion and manual insertion - to better understand how they affect hearing outcomes. Participants in this study will be randomly assigned to receive their cochlear implant using one of these two techniques. Both methods are performed in a standard operating room by qualified surgeons, and both are considered safe and approved for use. The main goal is to compare how well participants hear one year after surgery based on the insertion method used. The study will also look at things like surgical time, inner ear health, and how the hearing nerve responds. All participants will receive the same type of cochlear implant device and follow-up care. This study may help guide future surgical techniques and improve outcomes for individuals receiving cochlear implants.

Analysis of Parental Support in Families Using the LENA After Early Cochlear Implantation

The language environment that influences the child's language development has been studied using different subjective tools, mainly audio and/or video recording and manual transcriptions. The linguistic results of the implanted deaf child are dependent on the age at the implant, but also on the auditory and linguistic stimulation in the first months following the placement of the implant. Parents are the main actors in the child's language development. Professionals can rely on the LENA tool: Language ENvironment Analysis, which objectifies the language environment of the child at home in his daily environment. It is possible to obtain statistics on the number of adult words received by the child, the number of words produced by the child as well as the exposure to media and noise. On the basis of this quantitative data, the family can be supported in an attempt to optimize the conditions for receiving their child's speech. The purpose of this study is to analyze the effect of speech therapy parental support using the data provided by the Language ENvironment Analysis (LENA) tool, in a pediatric population implanted early, i.e. before the age of 18 months and aged under 24 months inclusive at the start of their participation in the study.

Robotic-Assisted Versus Manual Electrode Array Insertion

Robotics-assisted electrode insertion overcomes many surgeon-related kinetic limitations such as insertion speed, tremor, drift, and lack of accurate force control. In human cadaveric cochleae, robotics-assisted electrode insertion causes less intracochlear trauma compared to manual insertion. Whether this technical advance results in functional benefits in CI patients remains unknown. To address this critical knowledge gap, the investigators will compare cochlear trauma assessed using CT scans, cochlear and AN function assessed using ECochG and/or the eCAP, and clinical outcomes quantified by postoperative residual acoustic hearing and speech perception scores between participants randomized to either manual or robotics-assisted electrode array insertion.

Evaluation of the Automated Integration of a Robotics and ECochG System for Use With Cochlear Implant Surgery

Evaluation of the Automated Integration of a Robotics and ECochG System for Use with Cochlear Implant Surgery

Post-Market Clinical Investigation of the IotaSOFT Insertion System

The purpose of the proposed study is to evaluate the continued safety of the iotaSOFT Insertion System when used by a surgeon to assist with inserting a CI electrode array in one ear per subject