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Two cases of severe metabolic acidosis after monitoring of evoked spinal cord potential

Tohdoh, Y.; Sumita, S.; Iwasaki, H.; Kawamata, T.; Tsuchida, H.; Namiki, A.

Masui. Japanese Journal of Anesthesiology 46(11): 1479-1482

1997

ISSN/ISBN: 0021-4892
PMID: 9404131
Document Number: 479047
Evoked spinal cord potential (ESCP) elicited by direct spinal cord stimulation has been applied to monitor the spinal cord function during spinal surgery. We report here two patients who showed excessive muscle contraction and developed severe metabolic acidosis as a result of the stimulation of spinal cord to measure ESCP. These changes were prevented by vecuronium administration prior to ESCP monitoring. These results suggest that excessive muscle contraction by direct spinal cord stimulation may lead to metabolic acidosis. In conclusion, the use of a non-depolarizing muscle relaxant is recommended to prevent the adverse effects of ESCP monitoring.

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