1、Rarefaction clicks redound to BAEP diagnosis to sensorineural deafness.
2、The trauma of hair cells caused by strong sound, drug, aging, injury and various diseases in vitro and in vivo is sensorineural deafness and equilibrium problems' pathological base.
3、Conclusion The study suggest that selecting quality electric drill, using higher rotate speed, shorting time of expose to drill noise and medication can obviously reduce the possibility and severity of sensorineural deafness in middle ear and mastoid surgery.
