Yun Suk1, Jeong Hyun Lee, Kwang-Sun Lee. 1. *Department of Otolaryngology-Head and Neck Surgery, Korea University College of Medicine; and †Departments of Radiology and ‡Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
Abstract
OBJECTIVE: To compare audiologic performance after cochlear implantation (CI) in children with incomplete partition (IP) Type I and age-matched children with normal cochleae. STUDY DESIGN: Retrospective chart review. SETTING: Academic center. PATIENTS: Twenty-three children (25 ears) with IP Type I and 230 age-matched deaf children (230 ears) with nonsyndromic normal inner ears who underwent CI between January 2000 and June 2013. INTERVENTION CI MAIN OUTCOME MEASURE: The Categories of Auditory Performance (CAP) Scale score and the Meaningful Auditory Integration Scale (MAIS) score. RESULTS: The mean age of IP Type I patients at the time of CI was 5.3 years (standard deviation, 5.4 yr; range, 0.9-17.7 yr). The mean duration of follow-up was 4.7 years (standard deviation, 3.5 yr; range, 1.1-11.2 yr). Fourteen of the 25 IP Type I ears (56%) had cerebrospinal fluid gusher during the cochleostomy. In the IP type ears, the number of inserted electrodes was 16.3 ± 3.2 (range, 11-22), and the insertion angle was 236.5 ± 41.2 degrees (range, 180-305 degrees). The cochlear nerve was assessed in 17 of the 25 IP type ears, and hypoplasia was present in nine (53%). Facial nerve stimulation occurred in 15 of the 25 IP type ears. IP Type I patients younger than 3 years at CI had significantly lower CAP Scale and MAIS scores than age-matched controls at 12 and 24 months after CI, but similar CAP Scale and MAIS scores as age-matched controls at 42 and 72 months after CI. IP Type I patients aged 3 to 18 years at CI had similar CAP Scale and MAIS scores as age-matched controls at all post-CI time points. CONCLUSION: Children with IP Type I who underwent CI performed as well as children with normal cochlea in the long-term.
OBJECTIVE: To compare audiologic performance after cochlear implantation (CI) in children with incomplete partition (IP) Type I and age-matched children with normal cochleae. STUDY DESIGN: Retrospective chart review. SETTING: Academic center. PATIENTS: Twenty-three children (25 ears) with IP Type I and 230 age-matched deaf children (230 ears) with nonsyndromic normal inner ears who underwent CI between January 2000 and June 2013. INTERVENTION CI MAIN OUTCOME MEASURE: The Categories of Auditory Performance (CAP) Scale score and the Meaningful Auditory Integration Scale (MAIS) score. RESULTS: The mean age of IP Type Ipatients at the time of CI was 5.3 years (standard deviation, 5.4 yr; range, 0.9-17.7 yr). The mean duration of follow-up was 4.7 years (standard deviation, 3.5 yr; range, 1.1-11.2 yr). Fourteen of the 25 IP Type I ears (56%) had cerebrospinal fluid gusher during the cochleostomy. In the IP type ears, the number of inserted electrodes was 16.3 ± 3.2 (range, 11-22), and the insertion angle was 236.5 ± 41.2 degrees (range, 180-305 degrees). The cochlear nerve was assessed in 17 of the 25 IP type ears, and hypoplasia was present in nine (53%). Facial nerve stimulation occurred in 15 of the 25 IP type ears. IP Type Ipatients younger than 3 years at CI had significantly lower CAP Scale and MAIS scores than age-matched controls at 12 and 24 months after CI, but similar CAP Scale and MAIS scores as age-matched controls at 42 and 72 months after CI. IP Type Ipatients aged 3 to 18 years at CI had similar CAP Scale and MAIS scores as age-matched controls at all post-CI time points. CONCLUSION:Children with IP Type I who underwent CI performed as well as children with normal cochlea in the long-term.