What is it about?
BAEP tests typically use an average of 1000 or more times and a stimulation rate of 10 Hz. This method provides very accurate results in routine BAEP, but not in the operating room. Since many surgical operations during surgery can not be reflected in real time, we sought a way to detect sudden damage in real time.
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Why is it important?
Until now, worldwide BAEP warning criteria differed from hospital to hospital. The reason is not accurate. It is difficult to distinguish auditory nerve damage from waveforms because we have been using a conventional averaging time that is over 1000 times too long and the 10 Hz stimulation rate is too slow. We have presented a very important method for instantaneous waveform impairment of auditory nerve damage.
Perspectives
Most of the BAEP changes in MVD surgery are caused by the retractor. We performed an average of 400 case MVD surgeries per year. With the retractor effect, BAEP changes can be distinguished in real time, so we can operate without hearing loss.
Sang Ku Park
Department of Neurosurgery, Konkuk University Medical Center, 120-1 Neungdong-ro, Gwangjin-ku, Seoul, Korea
Read the Original
This page is a summary of: Real-time intraoperative monitoring of brainstem auditory evoked potentials during microvascular decompression for hemifacial spasm, Journal of Neurosurgery, November 2016, Journal of Neurosurgery Publishing Group (JNSPG),
DOI: 10.3171/2015.10.jns151224.
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