Research Article
Cochlear Implant Outcomes and Genetic Mutations in Children with Ear and Brain Anomalies
Table 2
Demographic, clinical and audiological data and aetiologies of hearing loss.
| | External ear malformations (total = 3 cases) | Middle ear malformations (total = 18 cases) | Inner ear malformations (total = 30 cases) | Brain anomalies (total = 119 cases) | Without brain anomalies (total = 24 cases) |
| Sex (female : male) | 1 : 2 | 9 : 9 | 11 : 19 | 55 : 64 | 9 : 15 | Mean age (in years) at the time of surgery | 3.0 | 3.0 | 4.4 | 4.0 | 7.0 | Mean period (in months) of using cochlear implant | 78 | 73 | 74 | 75 | 71 | Implanted ear (°) | 2L, 1R | 8L, 7R, 3B | 11L, 15R, 4B | 42L, 61R, 16B | 13L, 7R, 4B | % of progressive hearing loss | — | 22.2% | 30.0% | 45.3% | 54.1% | Cytomegalovirus infections | — | 3 | 2 | 26 | — | Meningitis | — | — | 1 | 11 | 1 | Genetic mutations | — | 2 | 5 | 21 | 3 | Syndromes | 3 | 3 | 5 | 6 | 4 | Unknown aetiology | — | 3 | — | 26 | 1 | Other conditions () | — | 2 | 2 | 19 | 1 |
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(R = right; L = left; B = bilateral); (infant cerebral palsy, prematurity, perinatal suffering, hydrocephalus, ischemia, and neonatal icterus).
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