Functional results with active middle ear implant or semi-implantable bone conduction device in patients with comparable hearing loss

Spiegel, Jennifer L.; Weiss, Bernhard G.; Bertlich, Mattis; Stoycheva, Ivelina; Canis, Martin und Ihler, Friedrich (2022): Functional results with active middle ear implant or semi-implantable bone conduction device in patients with comparable hearing loss. In: International Journal of Audiology, Bd. 61, Nr. 10: S. 859-867

Abstract

Objective In patients with conductive (CHL) or mixed hearing loss (MHL), hearing rehabilitation with an implantable hearing system, active middle ear implant (AMEI) or a semi-implantable bone-conduction device (SIBCD), is an option when conventional hearing aids are insufficient, or patients are unable to wear them. Design Retrospective analysis of 20 consecutive patients (24 implants) with a comparison of demographic characteristics and audiometric results (air-bone gap = ABG, effective hearing gain = EHG, functional hearing gain = FHG, Freiburg Monosyllabic Test in quiet, Oldenburg Sentence Test in noise = OLSA). Study sample Patients, eligible for both devices, who received either AMEI or SIBCD due to CHL or MHL. Results Analysis showed no significant differences in post-operative functional hearing results between the group of AMEI vs. SIBCD (ABG-reduction: 31.6 +/- 12.4 dB HL vs. 28.0 +/- 11.8 dB HL;p = 0.702;EHG: -1.6 +/- 7.7 dB HL vs. -1.2 +/- 4.2 dB HL;p = 0.090;FHG: 33.4 +/- 12.6 dB HL vs. 26.1 +/- 11.7 dB HL;p = 0.192;Freiburg: 83.0 +/- 15.6% vs. 83.6 +/- 14.2%;Freiburg-improvement: 57.7 +/- 26.8% vs. 68.2 +/- 19.7%;p = 0.294;OLSA: -2.7 +/- 3.0 SNR vs. -1.4 +/- 3.6 SNR;OLSA-improvement: 2.6 +/- 2.1 dB vs. 3.7 +/- 2.8 dB;p = 0.323). Four patients had the AMEI explanted due to insufficient functioning and later received a SIBCD. Conclusions Due to more challenging anatomical conditions, a surgical technique for the AMEI is more complex. However, functional results are comparable to the SIBCD. Therefore, proper patient counselling and cautious choice of the device are mandated before surgery.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Medizin
• Themengebiete: 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit
• ISSN: 1499-2027
• Sprache: Englisch