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Iowa Cochlear Implant Clinical Research Center Hybrid L24 and Standard Cochlear Implants in Profoundly Deaf Infants

The purpose of this feasibility study is to evaluate whether implantation of one Nucleus L24 electrode array and one FDA approved standard-length device in the contralateral ear can provide useful binaural hearing in pediatric subjects who have bilateral severe to profound hearing loss, meeting the criteria for cochlear implantation. Unlike a conventional cochlear implant, the Nucleus L24 is expected to preserve the regions of the cochlear partition that are apical to the electrode, thus leaving them available for possible future advances in the field of otolaryngology and hearing devices, such as mammalian hair cell regeneration techniques or improved implantable hearing devices. Whether or not this group of children will be able to take advantage of future hair cell regeneration strategies is yet to be determined and will have to wait for future development. At this time there are no accurate imaging strategies available to identify preservation of the scala media. Ultra thin micro CT scanning is in development, however the level of radiation delivery to the subject is too great to be considered for clinical use. When imaging strategies become available to determine cellular structure of the inner ear, they will be applied to this group of subjects. The Nucleus L24 array stimulates the basal turn of the cochlea, in an attempt to preserve the middle and apical regions of the scala media.

Start: September 2011
Motivated to Move: A Study to Determine the Feasibility of Self-Monitoring Physical Activity in Youth

Children with a medical condition don't get enough exercise, which can lead to even more health problems in childhood and adulthood. To help patients be more active, the McMaster Children's Hospital has an Exercise Medicine Clinic, where kids with any medical condition can get help from doctors and exercise specialists to safely become more active. The Exercise Medicine Clinic works with kids that have arthritis, inflammatory bowel disease, cystic fibrosis, cerebral palsy, cancer, diabetes, and a lot of other conditions. So far, most of the kids that go to the Exercise Medicine Clinic show improved fitness levels, but other kids don't seem to improve at all. These differences in improvements probably relate to how much physical activity the patients do on a regular basis. What is not known is exactly how to motivate the patients to be more active. In the Motivated to Move study, the investigators are going to learn more about how technology can be used to help kids feel more motivated to be active. The purpose of the Motivated to Move study is to see if it's feasible for patients to use step trackers over a 6-month period as part of the care patients receive at the Exercise Medicine Clinic. The results from the study will be used to see how the step tracking worked and to design a larger study that compares motivation to be physically active between children who wear and don't wear step trackers.

Start: June 2019