Document Detail

Experimental use of somatosensory evoked potential for intraoperative identification of spinal cord blood supply.
MedLine Citation:
PMID:  9284004     Owner:  NLM     Status:  MEDLINE    
The role of sensory evoked potentials (SEPs) to be used intraoperatively to reliably predict spinal cord ischemia, caused by interruption of intercostal and of lumbar and sacral arteries, was evaluated in a canine model. Two groups were assessed: (A) interruption of intercostal arteries (n = 6) and (B) interruption of all posterior branches (n = 6). SEPs were evaluated intraoperatively as control and interruption of posterior vessel groups, and at 18-22 h after surgery. Neurologic assessment was performed preoperatively and 18-22 h postoperatively by modified Tarlov criteria. Morphological assessments were also performed. The assessment of the groups demonstrated prolongation of latency and loss of amplitude of SEP, but individual changes of SEPs were poor predictors of paraplegia. Ultrastructural changes correlated with neurologic findings. SEPs were unreliable for intraoperative identification of vessels critical to spinal cord blood supply, possibly related to anatomically different blood supply of sensory and motor tracts.
M T Janusz; A K Qayumi; W R Jamieson; D J Fairholm
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of investigative surgery : the official journal of the Academy of Surgical Research     Volume:  10     ISSN:  0894-1939     ISO Abbreviation:  J Invest Surg     Publication Date:    1997 Jul-Aug
Date Detail:
Created Date:  1997-10-09     Completed Date:  1997-10-09     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8809255     Medline TA:  J Invest Surg     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  195-203     Citation Subset:  IM    
Department of Surgery, University of British Columbia, Vancouver, Canada.
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MeSH Terms
Evoked Potentials, Somatosensory*
Intraoperative Period
Spinal Cord / blood supply*
Spinal Cord Injuries / pathology,  physiopathology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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