Performance outcomes for borderline cochlear implant recipients with substantial preoperative residual hearing.

Objective: This study examined whether cochlear implant (CI) recipients with substantial preoperative residual hearing obtained more benefit from a CI than from a hearing aid (HA).

Study Design: Retrospective records review.

Setting: Tertiary referral center.

Energy transmittance predicts conductive hearing loss in older children and adults.

The test performance of a wideband acoustic transfer function (ATF) test and 226-Hz tympanometry was assessed in predicting the presence of conductive hearing loss, based on an air-bone gap of 20 dB or more. Two ATF tests were designed using an improved calibration method over a frequency range (0.25-8 kHz): an ambient-pressure test and a tympanometric test using an excess static pressure in the ear canal.