2020 Volume 63 Issue 6 Pages 509-517
We assessed the mapping characteristics and speech perception in 32 pediatric patients with inner ear anomalies, including 9 children with a common cavity (CC group), 12 with incomplete partition type I anomaly (IP-I group), and 11 with incomplete partition type II anomaly (IP-II group); 19 patients with GJB2-related deafness without inner ear anomalies served as the control group. All patients underwent cochlear implantation between 2004 and 2020, and were followed up for more than two years.
The IP-II group had no programming difficulties and there were no significant differences from the control group in regard to the electric charge requirements for loudness in the cochlear implant and the clarity of speech perception. Therefore, the IP-II group required no special considerations while devising a programming map.
We had to inactivate some electrodes due to a lack of auditory sensation in 8 patients of the CC group and 1 patient of the IP-I group. The electric charge requirement was larger by up to 5 times in the CC group and by up to 2.5 times in the IP-I group as compared to the control group. Speech perception in the CC and IP-I groups was variable, but word perception was 60% or better in all the children of the CC and IP-I groups.
