Motor Evoked Potentials and SedLine

Spine Surgery Clinical Trial

Official title: Monitoring Depth of Anesthesia With the SedLine Facilitates Motor Evoked Potential (MEP) Monitoring During Corrective Spinal Surgery

Status Terminated

Clinical Trial Summary

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.

Clinical Trial Description

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. ;

Study Design

Observational Model: Cohort, Time Perspective: Prospective

Related Conditions & MeSH terms

• Spine Surgery

• NCT number: NCT00805844
• Study type: Observational
• Source: University of California, San Francisco
• Status: Terminated
• Phase: N/A
• Start date: September 2008
• Completion date: September 2009