Special Populations in Implantable Auditory Devices: Pediatric

Comparison of Transcutaneous and Percutaneous Implantable Hearing Devices for the Management of Congenital Aural Atresia: A Systematic Review and Meta-Analysis

OBJECTIVE

To compare audiometric outcomes, complications, and revisions required for percutaneous (pBCD) versus transcutaneous (tBCD) implantable bone-conduction devices for the treatment of hearing loss associated with congenital aural atresia (CAA).Databases Reviewed.PubMed, Scopus, CINAHL.

METHODS

A systematic review was performed searching for English language articles from inception to December 14, 2022. Studies reporting audiometric outcomes or complications for either pBCDs or tBCDs for the treatment of CAA were selected for inclusion. A meta-analysis of single means and meta-analysis of proportions with comparison (Δ) of weighted proportions was conducted.

RESULTS

A total of 56 articles with 756 patients were selected for inclusion. One hundred ninety patients were implanted with pBCDs, whereas the remaining 566 were implanted with tBCDs. Mean pure-tone audiometry improvement in the pBCD group (39.1 ± 1.1 dB) was significantly higher than in the tBCD group (34.6 ± 1.6 dB; Δ4.5 dB; 95% confidence interval, 4.2-4.7 dB; p < 0.0001). The average improvement in speech reception threshold was 38.6 ± 2.5 dB in the percutaneous group as compared with 32.7 ± 1.6 dB in the transcutaneous group (Δ5.9 dB [5.3-6.5 dB], p < 0.0001). Overall complication rates for patients implanted with pBCDs and tBCDs were 29.0% (15.7-44.4%) and 9.4% (6.5%-13.0%), respectively (Δ19.6% [12.0-27.7%], p < 0.0001).

CONCLUSIONS

Patients with CAA implanted with pBCDs had significantly better audiometric outcomes than those implanted with tBCDs. However, complication rates were significantly higher among the pBCD group.

Tone evaluation of Ling sound test in Mandarin tone version

BACKGROUND

The Ling sound test cannot provide the test of Chinese tone for preschool children with hearing aid and cochlear implants.

OBJECTIVE

The paper tries to design a new tone test method composed of the Ling sound test and four Chinese tones to evaluate the hearing level of Chinese hearing-impaired children.

METHODS

The tone identification rates of 20 cochlear implant children were statistically analyzed to verify the validity of the Ling sound test in the Chinese tone version. In addition, this paper analyzed the pronunciation characteristics of the Ling sound test in the Chongqing-accented Mandarin version of 20 subjects.

RESULTS

The identification rate of Ling six sounds was more than 97.0%, the identification rate of tone was more than 81.0%, and the identification rate of vowels was 83.1%, which was higher than that of consonants 79.0%. The Ling sound test n the Chongqing-accented Mandarin version has a narrower frequency range.

CONCLUSION

The results verify the effectiveness and feasibility of the Ling sound test in the Chinese tone version in the assessment of frequency range and tone identification for cochlear implant users.