• Neurosurgery · Dec 1988

    Trigeminal depressor response during percutaneous microcompression of the trigeminal ganglion for trigeminal neuralgia.

    • J A Brown and M C Preul.
    • Department of Neurological Surgery, Medical College of Ohio, Toledo.
    • Neurosurgery. 1988 Dec 1; 23 (6): 745-8.

    AbstractPercutaneous microcompression of the trigeminal ganglion for trigeminal neuralgia was performed 23 times on 21 patients. Significant abrupt drops in heart rate and blood pressure (P less than 0.0002) occurred when the needle entered the foramen ovale or upon balloon advancement or inflation. In 16 of 23 (70%) procedures, the heart rate fell abruptly to 60 or less, by a mean of 38%. Mean arterial blood pressure decreased transiently by 31% during 12 of 23 (55%) procedures. Our findings of transient bradycardia and hypotension upon mechanical stimulation or compression of the mandibular nerve or trigeminal ganglion show for the first time the presence of a trigeminal depressor response in humans. We recommend that heart rate and arterial blood pressure be monitored continuously during percutaneous microcompression of the trigeminal ganglion. Intravenous atropine should be available for immediate use, and an external pacemaker should be fitted preoperatively.

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