Analysis of the Hemodynamic Response During Radiofrequency Thermocoagulation in Trigeminal Neuralgia.BACKGROUND
 Radiofrequency thermocoagulation (RFT) of the trigeminal ganglion is an excellent treatment option for medically intractable trigeminal neuralgia.  We checked and recorded the blood pressure and heart rate at baseline (before RFT), immediately before and after entering the foramen ovale (FO), during electrical stimulation, during thermal heating, and 30 minutes post-RFT.  Heart rate during thermal heating increased more than 20% compared to baseline (87.6 beats/min vs 69 beats/min, P &lt; 0.001).  The mean arterial pressure showed an increase of more than 15% compared to baseline when the cannula entered the FO (106.4 mmHg vs 90.9 mmHg, P &lt; 0.001) and during thermal heating (106.3 mmHg vs 90.9 mmHg, P &lt; 0.001).  FO puncturing, electrical stimulation, and thermal heating demonstrated an abrupt increase in heart rate and mean arterial pressure. 
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