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English Abstract
Journal Article
[Hearing preservation in children with electric-acoustic stimulation after cochlear implantation : Outcome after electrode insertion with minimal insertion trauma (German version)].
HNO 2018 September
BACKGROUND: Cochlear implantation in patients with functional residual low-frequency hearing is performed according to an established hearing-preserving surgical technique in order to cause minimal trauma of inner ear structures. Due to the increasing number of cochlear implants in children, the preservation of residual hearing is becoming increasingly important in this patient collective.
OBJECTIVES: Short- and mid-term hearing preservation outcome in pediatric patients is investigated.
MATERIALS AND METHODS: A group of 9 children (12 ears) between 5 and 12 years of age were examined after hearing-assisted cochlear implantation with respect to the pure tone audiometric thresholds. Retrospectively, short-term hearing preservation (up to 3 months after surgery) was examined. In a subgroup of 5 children, mid-term hearing preservation (7.5 to 16 months after surgery) was also analyzed. The mean values of hearing preserved (HL%) and hearing loss (HL) due to electrode insertion were calculated as measured values.
RESULTS: In the whole group, the mean values of the preoperative PTAlow were 29.8 dB and the short-term postoperative PTAlow 42.6 dB. The mean value of the HL% was 73.6%, corresponding to an HL of 9.4 dB. In the subgroup, the mean PTAlow postoperatively was 46.0 dB in the mid-term and the HL% at 80.7% with a HL of 6.6 dB.
CONCLUSIONS: The results in children are consistent with the results in adults. Electric-acoustic stimulation (EAS) should be used in the treatment of children with existing low-frequency residual hearing, as good residual hearing preservation can also be achieved in children after implantation.
OBJECTIVES: Short- and mid-term hearing preservation outcome in pediatric patients is investigated.
MATERIALS AND METHODS: A group of 9 children (12 ears) between 5 and 12 years of age were examined after hearing-assisted cochlear implantation with respect to the pure tone audiometric thresholds. Retrospectively, short-term hearing preservation (up to 3 months after surgery) was examined. In a subgroup of 5 children, mid-term hearing preservation (7.5 to 16 months after surgery) was also analyzed. The mean values of hearing preserved (HL%) and hearing loss (HL) due to electrode insertion were calculated as measured values.
RESULTS: In the whole group, the mean values of the preoperative PTAlow were 29.8 dB and the short-term postoperative PTAlow 42.6 dB. The mean value of the HL% was 73.6%, corresponding to an HL of 9.4 dB. In the subgroup, the mean PTAlow postoperatively was 46.0 dB in the mid-term and the HL% at 80.7% with a HL of 6.6 dB.
CONCLUSIONS: The results in children are consistent with the results in adults. Electric-acoustic stimulation (EAS) should be used in the treatment of children with existing low-frequency residual hearing, as good residual hearing preservation can also be achieved in children after implantation.
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