Round Window Occlusion Affects Bone Conduction in Cadaver Heads

Objective: To explore the feasibility of ear mold glue in the molding of round window occlusion (RWO) in cadaver heads and to study the effect on bone conduction (BC). Methods: Ten cadaver heads were selected to establish RWO model. Ear mold glue was used to immobilize round window niche. The vibration properties of the stapes footplate (VST) in response to the acoustic stimulation, and the vibration properties of the stapes footplate and cochlear promontory (VCP) in response to the B-71 stimulation were assessed by laser Doppler vibrometer in both pre-RWO and post-RWO. Results: The mean velocities of the stapes footplate in response to the acoustic stimulation in post-RWO were decreased significantly beyond 14 dB for frequency from 0.5k to 3k Hz and decreased beyond 11 dB for frequency above 4 kHz compared with pre-RWO (p
Source: Otology and Neurotology - Category: ENT & OMF Tags: Audiology Source Type: research