• J Neurosurg Anesthesiol · Jan 2002

    Effects of sevoflurane on electrocorticography in patients with intractable temporal lobe epilepsy.

    • Toshiki Endo, Kiyotaka Sato, Hiroshi Shamoto, and Takashi Yoshimoto.
    • Department of Neuroanesthesia, Kohnan Hospital, Sendai, Japan.
    • J Neurosurg Anesthesiol. 2002 Jan 1;14(1):59-62.

    AbstractFentanyl-droperidol technique is the choice for epilepsy surgery. It requires intraoperative electrocorticography (ECoG), but a large dose of fentanyl is needed for this technique. On the other hand, sevoflurane reportedly may be beneficial for intraoperative ECoG. To reveal whether the combined technique with fentanyl and sevoflurane is beneficial for epilepsy surgery, we investigated ECoG in 10 patients with intractable temporal lobe epilepsy without sevoflurane, with 0.5 minimum alveolar concentration (MAC) sevoflurane, and with 1.5 MAC sevoflurane under fentanyl-based anesthesia. The mean number of spikes for 1 minute decreased from 38.3 to 14.1 after 1.5 MAC sevoflurane was induced, which was statistically significant ( P <.05). Our results showed that balanced technique with neurolepto-analgesia (NLA) and sevoflurane is not suitable for epilepsy surgery requiring intraoperative ECoG. When epilepsy surgeries are performed under sevoflurane anesthesia, it is important to consider that sevoflurane may suppress electric activities when it is used with other anesthetic agents.

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