Monitoring Evoked Potentials in Order to Guarantee Integrity During Spine Surgery-Juniper publishers

JUNIPER PUBLISHERS-OPEN ACCESS JOURNAL OF HEAD NECK & SPINE SURGERY

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As early as in 1986 during my first visiting scholarship in New York University thanks to a NATO grant, together with E.R. John, then director of the Brain Research Labs, we were monitoring via Evoked Potentials the integrity of the facial nerve of people undertaking fossa tumor surgery in order to early detect heating of the facial due to laser surgery in the close cavity and thus stop for a while the surgeon in order to prevent face deformation after surgery, the main uncomfortable drawback of such surgery. My contribution was to develop and apply my single-sweep Autoregressive analysis [1-5] to make detection as early as one second delay instead of more than a minute needed with conventional averaging.

The approach enjoyed quite a success: did present its refinement to a conference in New Orleans in October 1988 [6], where the chief scientist of the local Naval Research Lab invited me to visit their simulation of pilot ejection where the need was to provide enough energy to rescue the pilot from the falling jet but not too much in order not to destroy his spine at neck: simulations, done with a real marine, were astonishing, slow movie showed the head almost touching knees like in a cartoon at the ejection, being the marine sit tight to the accelerated chair. The application of the same approach with one of his pupil, Dr Berenice Kaufman, and a few of bright student of mines was also quite satisfactory [7].

The further step is thus the application to spine surgery: some experiments have been done, stimulating somatosensory on feet, integrity of the spine can be monitored second by second through single sweep analyst of the somatosensory evoked potential, thus avoiding for instance obnoxious hyper distraction during the surgery.

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