Main outcome measure
Patients were closely monitored for complications such as tinnitus,
vertigo, facial paralysis, abnormal sense of taste and hearing loss.
Within the first week after operation,
each patient received two to
three levofloxacin ear drops per day in the ear subject to surgery. All
patients were examined at the first month, third month and sixth month
after operation. At each follow-up visit, the operator checked the
external auditory meatus, the healing of tympanic membrane and performed
pure tone audiometry (PTA, at 500 Hz, 1000 Hz, 2000 Hz and 4000 Hz) to
evaluate the level of hearing recovery.