Audiometric Thresholds in Patients Multichannel Cochlear Implant Users of the Clinical Hospital of Ribeirão Preto
Introduction: The cochlear implant promotes stimulation of the central auditory cortex, which implies the improvement of hearing over time and, thus, a greater number of sounds can be detected. Confirmation of minimum levels of detection can be observed in the responses obtained with a free field audiometry.
Objective: The study aimed to analyze the average hearing thresholds in users of multichannel cochlear implantation at different ages.
Methods: A retrospective study was done by analyzing the records of 228 users of multichannel cochlear implant. The sample was divided into two groups according to age: GI (17 years and 11 months) and GII (18-66 years). The data collected were: age at surgery, duration of CI use, and thresholds in the free field.
Results: The GI group corresponds to 68% of the sample group, and GII 32%. The average threshold in free field for the two groups was 35 dBNA. For the GI group, the mean age at the time of surgery was 6 years and 8 months and the mean duration of CI use was 3 years and 10 months. The average age at the time of surgery for GII was 35 years and mean duration of CI use was 4 years and 2 months.
Conclusion: The results show that the detection of sounds of medium and low intensity is possible for the majority of implanted adult and child subjects.