|
KMID : 1039520190230030153
|
|
Journal of Audiology & Otology
2019 Volume.23 No. 3 p.153 ~ p.159
|
|
|
Effects of Residual Hearing on the Auditory Steady State Response for Cochlear Implantation in Children
|
|
Kim Young-Seok
Han Sun-A
Woo Hyun-Jun
Suh Yung-Whan
Lee Jun-Ho
Oh Seung-Ha
Park Moo-Kyun
|
|
|
Abstract
|
|
|
Background and Objectives: We aim to explore the effects of residual auditory steady state response (ASSR) on cochlear implantation (CI) outcomes in children lacking auditory brainstem responses (ABRs).
Subjects and Methods: We retrospectively reviewed the data of child CI recipients lacking ABRs. All ears were divided into two groups: with residual ASSR and without ASSR. For each frequency, the T- and C-levels and the electrical dynamic ranges of postoperative 3-month and 1-year mappings were compared between the groups. To evaluate speech perception, patients who received simultaneous bilateral CIs were divided into two groups: group 1 exhibited responses at all frequencies in both ears; in group 2, at least one ear evidenced no response. The Categories of Auditory Perception (CAP) and Infant-Toddler Meaningful Auditory Integration Scale (IT-MAIS) scores were compared between the groups.
Results: We enrolled 16 patients. At 2 kHz, the postoperative 3-month and 1-year T-levels of patients with residual hearing were lower than those of hearing loss group (p=0.001, p=0.035). In residual hearing group, the ASSR threshold correlated positively with the postoperative 1-year T-level (p=0.012, R2 =0.276) and C-level (p=0.002, R2 =0.374). Of 10 simultaneous bilateral CI recipients, 5 exhibited ASSRs at all frequencies and the other 5 showed no response at ≥1 frequency. The latter had higher CAP scores at the postoperative 1-year (p=0.018).
Conclusions: In children exhibiting hearing loss in ABR testing, residual hearing at 2 kHz ASSR correlated positively with the post-CI T-level. Those with ASSRs at all frequencies had significantly lower CAP scores at the postoperative 1year. CI should not be delayed when marginal residual hearing is evident in ASSR.
|
|
|
KEYWORD
|
|
|
Cochlear implantation, Auditory brainstem evoked response, Auditory evoked response, Sensorineural hearing loss, Speech perception
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
 
|
|