J Korean Neurosurg Soc.  1986 Dec;15(4):651-660.

Utility of Brain-stem Auditory Evoked Potentials in Diagnosis and Surgery of the Posterior Fossa Lesions

• Kim DS
• Kim MC
• Kang JK
• Song JU
• Kim YB

Abstract

The brain-stem auditory evoked potentials(BAEPs) were evaluated in 5 adult patients with various posterior fossa lesions in the diagnosis and during operative manipulation to determine whether this technique was capable of providing useful information to the operating surgeon. The BAEPs were not only very sensitive noninvasive screening test in the diagnosis of small acoustic neuroma, but also very to preserve hearing during dissection of the tumor from the auditory nerve. In case of large acoustic neuroma, intraoperative BAEPs were helpful to monitor the effect of an operative procedure even on the contralateral brain-stem auditory pathway. Besides BAEP monitoring was also useful for operative manipulation in the region of the 8th nerve such as microvascular decompression of cranial nerve.

Keyword

Auditory evoked potentials; Posterior cranial fossa; Brain-stem; Auditory nerve; Intraoperative monitoring

MeSH Terms

Adult
Auditory Pathways
Cochlear Nerve
Cranial Fossa, Posterior
Cranial Nerves
Diagnosis*
Evoked Potentials, Auditory*
Hearing
Humans
Mass Screening
Microvascular Decompression Surgery
Monitoring, Intraoperative
Neuroma, Acoustic
Surgical Procedures, Operative