• Katsushige Watanabe, Takashi Watanabe, Akio Takahashi, Masafumi Hirato, Nobuhito Saito, and Tomio Sasaki.
• Department of Neurosurgery, Faculty of Medicine, Gunma University, Maebashi, Japan.
• Surg Neurol. 2003 Sep 1;60(3):267-9.

BackgroundDifficulties with the intraoperative monitoring of evoked responses sometimes occur because of displacement or dislodgment of the recording electrodes during surgery, especially if placed on nonshaved scalp.MethodsAn alternative fixation method of the recording electrode on the nonshaved scalp was developed. The sterile subdermal needle electrode was attached on the scalp by application of a transparent dressing (Tegaderm) over the electrode followed by fixing with a skin stapler.ResultsThe needle electrodes were easily, quickly, and firmly positioned even on the nonshaved scalp. The responses of the intraoperative evoked potentials were highly stable and reproducible throughout the operation.ConclusionThis fixation method for subdermal needle electrodes on the scalp is safe, reliable, and convenient for intraoperative electrophysiological monitoring of evoked potentials, even if the scalp is not shaved.

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