TITLE

Visual evoke potential monitoring during pallidal surgery for dystonia under general anesthesia

AUTHOR(S)
Sankhe, Milind
PUB. DATE
July 2007
SOURCE
Journal of Pediatric Neurosciences;Jul-Dec2007, Vol. 2 Issue 2, p101
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
INTRODUCTION: Use of VEP's (Visual Evoke Potentials) has been substantiated as useful monitoring technique during pallidal surgery under local anesthesia. We have used intraoperative VEP's to monitor and guide the placement in pallidal surgery for dystonia under general anesthesia. MATERIALS AND METHODS: Ten operations were performed in 8 patients under general anaesthesia. Recordings were obtained from 16 optic tracts in these patients. Macroelectrode stimulation of the optic tract was done. Lanency and amplitude changes were observed. Check MRI scan was performed in all cases. RESULTS: Flash VEP's were recordable under general anaesthesia in all patients. Macroestimulation evoked response was elicited in all but two cases. MRI scan confirmed the target placement in these cases. CONCLUSION: Flash VEP's can be recorded easily in patients under general anaesthesia. Macrostimulation evoked visual response is elicitable under general anaesthesia, facilitating the targeting of posteroventral pallidurn.
ACCESSION #
27450643

 

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