[Pre-operation evaluation and intra-operation management of cochlear implantation].

Objective: To summarize pre-operation evaluation experiences in cochlear implantation.

Methods: Performing auditory evaluation and image analysis seriously in 158 severe hearing loss or total deaf cases before cochlear implantation, comparing their performance with the findings during and post operation.

Results: Among the total 158 cases, 116 cases with normal structure, 42 cases with the abnormal findings of the inner or middle ear.