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Our specialists are happy to discuss your individual case with you. Serious inquiries only, please. For an appointment, call 303-783-9220. DIRECTOR: CNI Rocky Mountain Cochlear Implant
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Center for Hearing, |
The field of cochlear implants is very dynamic in that there is constant effort to improve the technology. The CNI Rocky Mountain Cochlear Implant Center has been involved in cochlear implant research since its conception, and is the largest cochlear implant research facility in the region. We have been, and continue to be, a clinical research site for numerous FDA clinical trials. The advantage of this has been that our patients are assured of receiving the most up-to-date technology. Our commitment to research is strong, and this will continue well into the future.
The Center also serves as a training facility for physicians from North and South America who are learning cochlear implant surgical techniques. Learn more about the Mile-Hi Sertoma MicroSurgery Teaching Lab.
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REVIEW Medical Journal - Spring 2005View Complete
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From the Editor (provided as webpage)
Current State-of-the-Art
in Cochlear Implantation
David C. Kelsall, MD
Auditory-Verbal
Therapy: Developing Spoken Language Through Listening With Children Who
Are Deaf
Nancy Caleffe-Schenck, M.Ed, CED, CCC-A, Cert. AVT
Acoustic Neuromas: Current
Treatment Options and Hearing Preservation Results
J.D. Day, MD
Genetic Causes of Sensorineural
Hearing Loss
Joseph L. Hegarty, MD
Papers
Presented at CI2003, "9th Symposium on Cochlear Implants in Children",
April 25, 2003"Assessment of hearing levels and speech perception abilities in children with Cochlear Corporation's Sprint and 3G Speech Processor" by David C Kelsall, MD and Allison Biever, MA, CCC-A
This study examines the aided thresholds of 26 pediatric cochlear implant recipients with Cochlear Corporation's Sprint and 3G-speech processor. Comparable thresholds were obtained in the soundbooth with Cochlear's Sprint (body worn) and 3G-speech processor (ear-level) for all participants. In some cases, speech perception results were slightly poorer with the 3G processor compared to the Sprnt processor. Subjectively, all participants reported that speech sounded different with the 3G speech process compared to the Spring processor. However, after approximately a 2-week trial with the 3G, most users reported that speech sounded better than it did initially with their 3G processor. In all cases, speech perception scores improved after a two- to four-week period of consistent use with the ear-level processor.
While initially, some patients' speech perception scores were somewhat poorer with the ear-level processor, in all cases these scores improved with experience. Subjectively, some parents and therapists have reported that the recipient appears to hear better with the body worn device. Further study may be needed to document the validity of this claim and to determine whether the performance of the 3G processor is equivalent to that of the body-worn processor in more reverberant environments, such as the classroom setting.
"Implantation of children with residual hearing: a longitudinal assessment of outcomes" by David C Kelsall, MD and Allison Biever, MA, CCC-A
This study examines the speech perception scores at three, six, twelve and twenty-four months post-initial stimulation of 10 pediatric cochlear implant recipients who were borderline in their candidacy criteria. All were implanted with the Nucleus 24-channel cochlear implant. This study also examines the incidence of residual hearing in the implanted ear for these children following surgery and explores signal integration issues with regards to amplification in the contralateral ear.
Significant improvement in aided thresholds and speech perception scores were obtained at three months post-initial stimulation for all of the pediatric subjects in this study. Clinical observations of these children reveal that most of the pediatric subjects had a more difficult time adjusting to the sound obtained from the cochlear implant initially. In some subjects, low-frequency thresholds could be obtained in the implanted ear following surgery. All of the children followed in this study attempted to use a hearing aid in their contralateral ear after a minimum of three months of implant-only use. Forty percent of the children in this study utilize a hearing aid in their contralateral ear on a consistent basis.
Data obtained over a 3-month to 3-year period reveals that children with residual hearing who demonstrate speech perception abilities that exceed conventional candidacy scores are able to obtain significant benefit from their cochlear implants at a rapid rate. For pediatric implant recipients with significant residual hearing, successful signal integration of cochlear implant and hearing aid signals may not be obtainable in all cases.
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Colorado Neurological
Institute Center for Hearing
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