Clin Exp Otorhinolaryngol.  2021 Aug;14(3):355-358. 10.21053/ceo.2020.02523.

Effects of Contralateral Routing of Signal Hearing Aids on Audiological and Academic Performance in School-Age Children With Unilateral Hearing Loss

• Kwak SH
• Kim D
• Bae SH
• Moon IS
• Kim SH
• Choi JY
• Jung J

• KMID: 2519191
• DOI: http://doi.org/10.21053/ceo.2020.02523

Figure

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  Fig. 1. (A) Outcomes of sound localization testing after contralateral routing of signal (CROS) hearing aid (HA) fitting in children with unilateral hearing loss (UHL). The ability of sound localization was measured as the root-mean-square error (RMSE) degree. The test was assessed at initial HA fitting (in both the unaided and CROS HA-aided states) and at 3, 6, and 12 months after HA fitting. (B-E) Outcomes of the Korean version of the Hearing in Noise Test (K-HINT) after CROS HA use in children with UHL. The composite scores were calculated using the formula: [2×noise front+noise right+noise left]/4. Speech perception ability was evaluated in three types of noise environments (ipsilateral side, contralateral side, and front) in both the unaided and CROS HA-aided states. The K-HINT was administered at the initial HA fitting (in both the unaided and CROS HA-aided states) at 3, 6, and 12 months after HA fitting. SNR, signal-to-noise ratio. *P<0.05, **P<0.01.

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  Fig. 2. Evaluation of school performance after contralateral routing of signal (CROS) hearing aid (HA) use in children with unilateral hearing loss (UHL). To evaluate school performance after CROS HA fitting, the Korea National Institute for the Special Education-Auditory Behavioral Checklist (KNISE-ABC) questionnaire was used. The KNISE-ABC consists of seven test areas: listening, listening in background noise, communication, learning, auditory memory, auditory attention, and related behaviors. The blue line indicates mean test results for schoolchildren with normal hearing [6]. The red line indicates the results for 18 elementary schoolchildren with cochlear implants (CIs) [7]. The red asterisks indicate statistical significance between CI and CROS HA users (P<0.05). The blue asterisks indicate statistical significance between schoolchildren with normal hearing and CROS HA users (P<0.05). + refers to the mean scores of study participants.

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