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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT02392403
Registration number
NCT02392403
Ethics application status
Date submitted
13/03/2015
Date registered
19/03/2015
Date last updated
1/11/2018
Titles & IDs
Public title
Clinical Investigation of the Nucleus® CI532 Cochlear Implant
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Scientific title
Clinical Investigation of the Nucleus® CI532 Cochlear Implant
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Secondary ID [1]
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CLTD5446
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Hearing Loss
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Condition category
Condition code
Ear
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Deafness
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Experimental: Nucleus CI532 cochlear implant -
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Scalar Position of Electrode Array Determined With Computer Tomography (CT) Scan
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Assessment method [1]
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The position of the electrode array can be completely in scala tympani, completely in scala vestibuli, or may transverse from scala tympani to scala vestibuli. The position can be determined from high resolution flat panel volume tomography (Cone beam) imaging.
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Timepoint [1]
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up to one month post-surgery
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Secondary outcome [1]
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Array Proximity to the Modiolus Measured Using the Wrapping Factor
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Assessment method [1]
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The ratio of the active array length and the corresponding lateral wall length
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Timepoint [1]
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up to one month post-surgery
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Secondary outcome [2]
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Surgeon Questionnaire on Implant Surgery
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Assessment method [2]
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To collect experiences using the CI532. At each surgery, the surgeon was asked whether "overall the CI532 was easy to handle and the EA32 easy to insert". We counted the number of surgeons who strongly agreed or who agreed.
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Timepoint [2]
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at time of surgery
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Secondary outcome [3]
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Change From Baseline in Speech Recognition in Quiet and Noise at 6 Months
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Assessment method [3]
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Change in percent correct speech recognition test scores for implant ear alone and best aided
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Timepoint [3]
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baseline and 6 months post activation
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Secondary outcome [4]
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Patient Reported Benefit in Health Status Assessed Via Glasgow Benefit Inventory Questionnaire
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Assessment method [4]
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The Glasgow Benefit Inventory is a single time point measure of patient reported benefit.
A score of 0 indicates no benefit; the minimum score is -100 and the maximum is +100.
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Timepoint [4]
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6 months post activation
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Secondary outcome [5]
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Change From Baseline in Hearing Ability Assessed Via Speech Spatial Hearing Qualities Questionnaire at 6 Months
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Assessment method [5]
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Rating scale. 0=worst; 10=best
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Timepoint [5]
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baseline and 6 months post activation
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Secondary outcome [6]
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Change From Baseline in Air-conduction Pure-tone Hearing Thresholds Via an Audiogram at 6 Months
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Assessment method [6]
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We report only the change for the 500 Hz frequency.
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Timepoint [6]
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baseline and 6 months post activation
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Secondary outcome [7]
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Number of Adverse Events at Surgery
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Assessment method [7]
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Timepoint [7]
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at time of surgery
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Secondary outcome [8]
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Number of Adverse Events Post Surgery to 6 Months Post-activation
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Assessment method [8]
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Timepoint [8]
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post surgery to 6 months post-activation
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Eligibility
Key inclusion criteria
* Eighteen years of age or older at the time of implantation
* Conventional candidate for cochlear implantation with a perimodiolar electrode array according to local criteria (excepting the exclusion criteria that follow)
* Native speaker in the local language used to assess clinical performance
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Minimum age
18
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
* Evidence of hearing loss prior to 5 years of age
* Prior cochlear implantation; i.e. having a cochlear implant in the contralateral ear, or previously implanted in either ear
* Medical or psychological conditions that contraindicate undergoing general anaesthesia or surgery
* Ossification, malformation or any other cochlear anomaly, such as common cavity, that might prevent complete insertion of the electrode array, as confirmed by medical examination
* Hearing impairment due to lesion or neuropathy of the acoustic nerve, VIII nerve or central auditory pathway
* Active middle-ear infection
* Tympanic membrane perforation
* Unrealistic expectations on the part of the subject, regarding the possible benefits, risks, and limitations that are inherent to the surgical procedure(s) and prosthetic devices
* Unwillingness or inability of the candidate to comply with all investigational requirements such as undergoing a post-operative digital volume tomography/ConeBeam scan
* Patients with existing Cerebral Spinal Fluid shunts or drains, existing perilymph fistula, skull fracture or Cerebral Spinal Fluid leak
* Patients with recurrent episodes of bacterial meningitis
* Pregnancy or breast-feeding
* Known allergies to components of the implant
* Wearing other active implants with known interference with cochlear implants
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Study design
Purpose of the study
Treatment
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Allocation to intervention
NA
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Single group
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Other design features
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Phase
NA
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/04/2015
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
1/07/2016
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Sample size
Target
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Accrual to date
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Final
45
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Recruitment in Australia
Recruitment state(s)
VIC
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Recruitment hospital [1]
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The HEARing CRC - Melbourne
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Recruitment postcode(s) [1]
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3010 - Melbourne
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Recruitment outside Australia
Country [1]
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France
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State/province [1]
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Midi-Pyrénées
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Country [2]
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Germany
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State/province [2]
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Baden-Württemberg
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Country [3]
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Germany
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State/province [3]
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Bavaria
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Country [4]
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Germany
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State/province [4]
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Hessen
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Country [5]
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Germany
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State/province [5]
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Niedersachsen
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Country [6]
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Germany
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State/province [6]
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Schleswig-Holstein
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Country [7]
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Spain
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State/province [7]
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Gran Canaria
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
Cochlear
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief summary
The aim of this study is to investigate the clinical benefit for patients implanted with the Nucleus® CI532 cochlear implant and to demonstrate the atraumatic nature of the electrode design. Nucleus® CI532 has a pre-curved, perimodiolar array, the EA32, which is introduced into the cochlea through a straightening sheath.
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Trial website
https://clinicaltrials.gov/study/NCT02392403
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Trial related presentations / publications
Hey M, Wesarg T, Mewes A, Helbig S, Hornung J, Lenarz T, Briggs R, Marx M, Ramos A, Stover T, Escude B, James CJ, Aschendorff A. Objective, audiological and quality of life measures with the CI532 slim modiolar electrode. Cochlear Implants Int. 2019 Mar;20(2):80-90. doi: 10.1080/14670100.2018.1544684. Epub 2018 Nov 22.
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Public notes
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Contacts
Principal investigator
Name
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Chris J James, PhD
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Address
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Cochlear
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for scientific queries
No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results are available at
https://clinicaltrials.gov/study/NCT02392403
Download to PDF