Monitoreo medular intraoperatorio con potenciales motores

RESUMO

Spinal Cord Monitoring with Motor Action PotentialsThe risk of cord damage during espinal surgery and specially in scoliosis correction and instrumentation is still high todoy. Many systems of medullary monitoring have been described, starting with trhe widely uses "wka-up" test and ending with the Somatosensory Evoked Potentials. This methodos have shown a lack of sensitivity for being cuantitative and specific for the sensitive spinal cord. In this paper we designed a system os Spinal Cord Monitoring using MOTOR ACTION POTENTIALS (M.A.P.s.) WITH TRANSVERTEBRAL STIMULATION AND DISTRAL MUSCULAR RECEPTION. This has been performed both in experimental animals and patients.In this first stage we present the results of the experiemental work on ten rabbits, on which we obtained a spinal cord section obtaining a to tal loss of the stimuli. Finally we studied the charges of the M.A.P.; on a second stage we induced distraction forces. The results showed that the M.A.P. is reproducible, that it disapear with the cord section and of the initial amplitude the espinal cord has irreversible damages. this experimental work is the first to present a spinal cord monitoring with transvertebral to distal muscular motor action potentials