摘要 : 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 opti... 展开 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 ±12.4dB HL vs. 28.0±11.8dB HL; p = 0.702; EHG: -1.6±7.7dB HL vs. -1.2±4.2dB HL; p = 0.090; FHG: 33.4±12.6dB HL vs. 26.1 ± 11.7dB 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±2.8dB; 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. 收起