• Anesthesia and analgesia · Jun 2004

    Comparative Study

    A comparison of frontal and occipital bispectral index values obtained during neurosurgical procedures.

    • Toshie Shiraishi, Hiroyuki Uchino, Takeshi Sagara, and Nagao Ishii.
    • Department of Anesthesiology, Tokyo Medical University, Hachioji Medical Center, 1163 Tate-machi, Hachioji-shi, Tokyo 193-0998, Japan. toshi-s@tokyo-med.ac.jp
    • Anesth. Analg. 2004 Jun 1; 98 (6): 1773-5, table of contents.

    UnlabelledWe placed bispectral index (BIS) sensors on the frontal and occipital areas of neurosurgical patients and compared BIS values obtained from both areas during propofol/fentanyl anesthesia. BIS showed a strong correlation between frontal and occipital montages (r(2) = 0.96; P = 0.03). It may be valid to measure BIS with the sensor on the occipital area if required during frontal neurosurgical procedures.ImplicationsBispectral values were positively correlated when recorded from frontal and occipital sensors in patients undergoing clipping of unruptured cerebral aneurysms while anesthetized with propofol and fentanyl.

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