Stapes surgery with a persistent stapedial artery.

Abstract

To review surgical outcomes of stapes surgery for otosclerosis with persistence of the stapedial artery. A retrospective case review of a tertiary neurotology referral center of patient with otosclerosis undergoing primary stapes surgery between 2010 and 2017 found to have a persistent stapedial artery. Stapedectomy was performed with or without cauterization of the stapedial artery. The primary outcome measures include pre- and postoperative hearing as well complications. Hearing was measured by air conduction (AC) and bone conduction (BC) pure-tone averages (PTA), air-bone gap (ABG), and word recognition scores (WRS). Neurologic complications, including facial nerve function, were assessed. Four patients out of 853 with otosclerosis undergoing stapedectomy were found to have a persistence of the stapedial artery. Mean AC PTA was 55dB preoperatively, and 24dB postoperatively (p=.0041), while the ABG improved on average from 31dB to 6dB (p=.0014). Mean follow-up time was 32months, and there were no significant complications. Facial nerve function was preserved in all patients (House-Brackmann grade I/VI). In the case of a persistent stapedial artery, excellent hearing outcomes are achievable for otosclerosis via stapedectomy without an apparent increased risk of neurologic complication.