Participants
Eight subjects (16 ears, 4F4M, average age 21.88 years old) whose pure
tone audiometry (PTA) thresholds were less than 25 dB HL at each
frequency from 250 Hz to 8 kHz (average PTA of 0.5/1/2/4kHz was
4.38±4.96) were enrolled to undergo fs-ABR in SPC and OR to standardize
the system. Forty-two CHL subjects who were determined to take
ossiculoplasty in our hospital were enrolled from 2016 to 2019 whose
etiologies were listed in the Supplemental table1. Four hearing tests
were required: the pre-operative and 3 to 6-month post-surgery PTA tests
in SPC; pre-operative fs-ABR test under general anesthesia before the
surgery in OR; intra-operative fs-ABR test right after the
reconstruction with recovered external canal skin flap.