determine the effect of a HA in combination with a CI in children as well asdetermine the effect of bilateral cochlear implantation.
ID
Source
Brief title
Condition
- Ear and labyrinthine disorders congenital
Synonym
Research involving
Sponsors and support
Intervention
Outcome measures
Primary outcome
results of individual patients on varied audiometric tests(directional
hearing,speech perception, evoked potentials)
Secondary outcome
not applicable
Background summary
Humans are hearing with two ears. This is the reason why they are hearing from
which direction the sound comes from. Because of this it's possible to direct
to the source of the sound and determine directly from which side possible
danger is coming from.
Binaural hearing can also reduce the negative influence of disturbing sounds on
speech perception.
Patients with severe hearing loss and a unilateral cochlear implant (CI) or
with a unilateral hearing aid (HA) cannot hear binaurally.
In the case of contralateral useful residual hearing in children with CI it is
often advised to use a hearing aid contralateral.This is called bimodal
adaptation.
Also, a few deaf children are provided with a bilateral cochlear implant
(bilateral adaptation).
There is little evidence of binaural advantage in adult CI-patients with
contralateral a HA.This advantage is still not demonstrated enough, especially
not for children with a congenital severe hearing loss (Ching e.a., 2005).
Moreover,the effect of the variables:gravity of the hearing loss and duration
of absence of stimulation on the non-implanted ear or the ear that is implanted
secondly, is not known.
It is also not known if it is possible to obtain binaural hearing in all deaf
children after bilateral cochlear implantation.Publications with regard to
postlingual deaf adult CI-users show that an advantage of bilateral
implantation can be expected, for example in directional hearing (Muller 2002,
Stark 2002, Au 2003, Das 2005).Publications of studies of binaural hearing in
bilateral implanted children, are still rare.
Study objective
determine the effect of a HA in combination with a CI in children as well as
determine the effect of bilateral cochlear implantation.
Study design
Observational study without invasive measurements
Study burden and risks
parents fill in a few questionnaires about health of the child and its
audiologic functioning in different situations of every day life
There are no risks for the child participating in this study and the burden for
the subject is very small.
For parents it is very useful to know what the advantage is of the CI or the
HA. With the results parents can be advised towards the use of the CI or HA.
postbus 9101
6500 HB Nijmegen
NL
postbus 9101
6500 HB Nijmegen
NL
Listed location countries
Age
Inclusion criteria
children and teenagers, age 5 to 20 with a normal intelligence.
These children have a severe hearing loss and have at least unilateral a cochlear implant and contralateral a cochlear implant or a hearing aid
Exclusion criteria
additional handicaps as mental retardation
Design
Recruitment
Followed up by the following (possibly more current) registration
No registrations found.
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
| Register | ID |
|---|---|
| CCMO | NL16772.091.07 |