Abstract:
STUDY DESIGN:To record prospectively combined motor- and somatosensory-evoked potentials in children during scoliosis surgery using Cotrel-Dubousset instrumentation, without using special anesthetic or muscle relaxant regimens. OBJECTIVE:To determine the outcome of scoliosis surgery guided by a new technique of monitoring motor- and somatosensory-evoked potentials simultaneously. SUMMARY OF BACKGROUND DATA:Other techniques used to assess cord function generally are limited by special anesthetic requirements or assess only a limited part of the cord or monitor motor function separately from somatosensory function. METHODS:Spinal cord function was monitored using epidural leads to record simultaneously the descending motor volley (by transcranial electrical stimulation) and the ascending somatosensory volley (by tibial nerve stimulation) at two spinal levels. RESULTS:Combined motor- and sensory-evoked potentials were recorded successfully in 138 of 160 children (81%). Changes in evoked potential waveforms were seen in eight patients (5%), but resolved or lessened in response to appropriate measures. Curve correction was satisfactory, and there were no new postoperative deficits or worsening of preexisting deficits in any patient. CONCLUSION:A spinal cord monitoring system is described that is safe, reliable, accurate, and makes it unnecessary to resort to the "wake-up" test.
journal_name
Spine (Phila Pa 1976)journal_title
Spineauthors
Stephen JP,Sullivan MR,Hicks RG,Burke DJ,Woodforth IJ,Crawford MRdoi
10.1097/00007632-199611010-00008subject
Has Abstractpub_date
1996-11-01 00:00:00pages
2450-7issue
21eissn
0362-2436issn
1528-1159journal_volume
21pub_type
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