Percutaneous Bone-Anchored Hearing Implant: Is It Clinically Useful in Korean?

Sung Min Koh, Young Sang Cho, Ga Young Kim, Mini Jo, Hye Yoon Seol, Il Joon Moon

Research output: Contribution to journalArticlepeer-review

Abstract

Background: The aim of this study is to investigate the clinical effectiveness of Ponto in Korea, a recently released percutaneous bone-anchored hearing implant. Methods: 16 patients with single-sided deafness (SSD) and mixed or conductive hearing loss who underwent Ponto implantation from December 2018 to September 2020 were enrolled in the study. Puretone audiometry, the Korean version of the Hearing in Noise Test (K-HINT), sound localization test (SLT), and Pupillometry were performed pre and three months post-operation. Standardized questionnaires, the Hearing Handicap Inventory for the Elderly (HHIE) and Speech, Spatial and Qualities of Hearing Scale (SSQ), were administered. Results: The mean age of subjects was 55.5 (range, 48–67) years. Four males and 12 females participated in the study. The mean puretone average was 73.17 dB hearing level (HL) before surgery and significantly improved to 36.72 dB HL three months after surgery. The mean word recognition score improved from 26.0% to 90.75% after implantation. In the case of K-HINT, there was a significant difference in summation (Z = −2.250, P = 0.024) and head shadow effects (Z = −3.103, P = 0.002). There was no significant difference in root mean square error degree (RMSE) and hemifield identification scores for SLT testing. Pupillometry was performed to measure listening effort and the results revealed that the degree of pupillary dilatation decreased under the condition of quiet, 0 dB signal to noise ratio (SNR) and 3 dB SNR. The total score for HHIE decreased significantly (Z = −3.130, P = 0.002) while the SSQ score increased significantly (Z = −2.216, P = 0.027).

Original languageEnglish
Article numbere182
JournalJournal of Korean Medical Science
Volume37
Issue number23
DOIs
StatePublished - 2022

Bibliographical note

Publisher Copyright:
© 2022. The Korean Academy of Medical Sciences

Keywords

  • Bone conduction devices
  • Ponto
  • Pupillometry
  • Sound localization
  • Speech recognition in noise

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