• Monitoring and Evaluations for Epilepsy Surgery

    After we complete the noninvasive diagnostic tests (PET, MEG, MRI, SISCOM and neuropsychological testing) that determine if your child is a candidate for surgery, we will arrange to have your child return for the second treatment phase. One-step surgeries include corpus callosotomy and hemispherectomy. Other surgeries, involving resection, or taking out, of the epileptic focus area, may involve two surgeries:

    • During the first surgery, an electrode grid is placed on the surface of your child’s brain. These electrodes, of various sizes, are placed in areas where your child’s seizures are thought (from Phase 1 testing) to be coming from. Seizure activity can precisely and accurately identify and verify the seizure focus or foci.
    • After careful monitoring and review of the intracranial EEG and mapping of eloquent areas such as language and motor cortex, your child is taken back to the OR, within days to a few weeks after grid placement, to remove the grids and resect, or remove, the portion of brain causing seizures.

    Intracranial Electrode Monitoring

    During this surgical procedure, electrodes on a very light transparent sheet are gently placed on the surface of the brain to get an accurate reading of the brain’s activity. The electrodes remain in place for a few days to a few weeks so that VEEG recording and other testing can be done. The data are used by the team to verify the location of seizure activity. The electrode placement also allows the team to “map” areas of the brain, locating important functional areas such as motor, sensory and speech. The epilepsy team can then develop a surgical plan that will potentially remove the area or areas causing seizures while leaving important functional areas untouched.

    What Intracranial Electrode Monitoring Tells Us

    • It records seizure and other abnormal activity in the brain.
    • It helps locate functional areas within the brain that the surgeon does not want to disturb.
    • Combined with the results of the noninvasive tests, it gives us the most accurate picture available of your child’s functional brain areas, as well as areas where seizures occur.
  • Contact Us About Epilepsy Treatments

    A young patient of the Epilepsy Surgery Program.

    To contact the Epilepsy Surgery Center at Cincinnati Children's, call 513-636-4222 or 1-800-344-2462, ext. 4222.

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