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Monitoring Corticocortical Evoked Potentials During Intracranial Vascular Surgery
Tetsuyuki Yoshimoto1, Katsuhiko Maruichi1, Yasuhiro Itoh2
1Department of Neurosurgery, Kashiwaba Neurosurgical Hospital, Sapporo, Japan.
World Neurosurgery
|November 9, 2018
Summary
Corticocortical evoked potentials (CCEPs) can be reliably monitored during intracranial vascular surgery to detect ischemia and monitor speech function, especially on the left side of the brain.
Area of Science:
- Neurosurgery
- Neurophysiology
Background:
- Corticocortical evoked potentials (CCEPs) monitoring aids speech function preservation during brain tumor surgery under anesthesia.
- This study investigated CCEPs reproducibility and sensitivity during intracranial vascular surgery under general anesthesia.
Observation:
- CCEPs were monitored during 58 vascular surgeries, including clipping, bypasses, and hematoma removals.
- The study focused on monitoring CCEPs between frontal and temporal lobes.
Findings:
- CCEPs were reproducibly monitored in bilateral vascular surgeries without postoperative complications.
- Reduced CCEPs were observed during intraoperative transient blood flow obstructions, indicating sensitivity to ischemia.
- Simultaneous monitoring of motor and somatosensory evoked potentials showed no changes.
Implications:
- CCEPs are a viable tool for routine intraoperative monitoring during intracranial vascular surgery.
- CCEPs are sensitive to ischemic changes and can potentially monitor speech function, particularly on the left hemisphere.
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