Efficacy and safety of intracochlear corticosteroid delivery as salvage therapy for complete sudden sensorineural hearing loss.
IMPORTANCE Complete idiopathic sudden sensorineural hearing loss (ISSNHL, defined as pure-tone average ≥ 95 dB HL according to the 2021 WHO hearing loss classification) is a refractory otoneurological emergency with extremely poor prognosis. Conventional intratympanic therapy depends on passive diffusion across the rou...