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San Francisco, California 94143


To determine if using usual clinical practice plus a depth of anesthesia monitor, SedLine, to guide anesthetic administration improves the quality and ease of MEP monitoring in patients undergoing corrective spinal procedures.

Study summary:

Motor Evoked Potential (MEP) monitoring during spine surgery is now used routinely. However it is affected by a variety of anesthetics including fluctuating and/or excessively deep or light levels of anesthesia. A common problem is maintaining an overall constancy and adequacy of anesthesia. Individual patients' responses to anesthesia can differ greatly from population means and can complicate the interpretation of MEPs. False alarms can have significant consequences. One strategy to minimize the anesthetic induced variability of MEPs, and thereby improve the monitoring overall, is to keep the patient's anesthetic state (or "depth") in a narrow range during surgery. This study tests whether using a commercially available depth of anesthesia monitor in addition to usual clinical practice improves the quality of MEPs. The hypothesis of this study is that the SedLine Monitor, which uses an EEG derived assessment of anesthetic depth, may facilitate MEP monitoring if it is kept within a narrow range during spine surgery. Because SedLine recommends maintaining their Index between 30 and 40 during surgical anesthesia, this is the range used in the primary hypothesis.


Inclusion Criteria: - Patients undergoing corrective spinal procedures, for whom MEP monitoring has been requested by the surgeon. - 18 yrs of age or older Exclusion Criteria: - Minors, prisoners and those unable to consent for themselves.



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San Francisco, California 94143
United States

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Site Status: N/A

Data Source: ClinicalTrials.gov

Date Processed: October 09, 2019

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