Real-Time Intraoperative Monitoring during Neurosurgical and Neuroradiological Procedures
As neurosurgical and neuroradiological techniques and equipment have advanced, the ability to preserve the functional integrity of neurologically compromised central nervous system structures has become more of a reality. Neurophysiological monitoring systems have been shown to be quite useful in this regard. Brainstem auditory and somatosensory evoked potentials (BAEP’s and BSEP’s) have been utilized to monitor lateral and medial brainstem function (1, 2, 3) during posterior fossa procedures. Subcortical and cortical somatosensory evoked potentials have been monitored during surgical and radiological procedures for aneurysms, AVM’s, and tumors (4, 5, 6, 7). Visual evoked potentials (VEP’s) have been monitored during procedures where visual system structures are deemed to be at risk (AVM’s, pituitary and sella turcica tumors) (8, 9, 10). Finally, 7th and 8th cranial nerve function has been monitored with brainstem auditory and facial evoked potentials (11, 12). In fact, a recent review of the literature uncovered over 200 monitoring papers published over the past 10 years.
KeywordsPosterior Fossa Digital Filter Wave Shape Acoustic Neuroma Spinal Cord Tumor
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