Hearing Outcomes with Percutaneous and Transcutaneous BAHA® Technology in Conductive and Mixed Hearing Loss.

OBJECTIVES

To evaluate outcomes of BAHA Connect® and BAHA Attract® implantations, and to examine the prognostic utility of a preimplantation Softband®-attached processor trial.

STUDY

DESIGN

Retrospective case review.

SETTING

Tertiary referral center.

PATIENTS: Patients who underwent Connect® (19 ears) and Attract® (25 ears) implantation between 2007 and 2017.

INTERVENTION: BAHA® implantation.

MAIN OUTCOME MEASURES: Unaided air conduction (AC), bone conduction (BC), and speech reception thresholds (SRTs), as well as free field (FF) aided with Softband®-attached processor and with implant-attached processor thresholds.

RESULTS

Serviceable implant-attached processor PTA0.5,1,2 kHz (≤35 dB HL) was achieved in 89 and 88% of the Connect® and the Attract® ears, respectively, while at 4 kHz this was achieved in 68 and 32% of the Connect® and the Attract® ears, respectively (p  =  0.032). Significantly more Connect® ears showed alignment between FF aided with implant-attached processors thresholds and BC thresholds. The alignment between the Softband®-attached processors thresholds and implant-attached processors thresholds was similar in the two groups. Both groups exhibited similar positive improvement in the quality of life questionnaires.

CONCLUSIONS

Accessibility to sound with the implant-attached processor is well predicted by the pre-implantation Softband® trial, both in the BAHA Connect® and in the BAHA Attract® ears. Hearing rehabilitation targets at 0.5, 1, and 2 kHz are met by most Connect® and Attract® ears, while at 4 kHz the outcome with Attract® is poorer. This information should be presented to the patient during consultation prior to a decision as to the type of BAHA® device to be implanted.