| Objective: In the experimental,patients undergoing general spinal anesthesia were subjected to electrical stimulation of posterior tibial nerve and Kunlun points on the bladder meridian respectively.The corresponding cortical evoked potentials were recorded on the head using somatosensory evoked potential(SEP),then analyze the collected statistics.Design this experiment,the electrophysiological response of the bladder meridian and the posterior tibial nerve after electrical stimulation was transformed into cortical evoked potentials and analyse this evoked potentials.To analyze the functional correlation between the bladder meridian and the posterior tibial nerve and to explore the correlation between meridian and nerve.Methods:Selected patients who were hospitalized for spinal diseases and planned to undergo general anesthesia from June 2020 to March 2021,and those who met the inclusion and exclusion criteria were selected for intraoperative neuromonitoring.After the completion of general anesthesia,electrical stimulation of both lower limbs separately.The points of electrical stimulation is posterior tibial nerve on the right lower limb and Kunlun on the left lower limb.Cortical somatosensory evoked potentials are extracted on the head by intraoperative neurmonitoring technology.Record the waveform,amplitude,and latency of the cortical somatosensory evoked potentials obtained by stimulating Kunlun and posterior tibial nerve,measure and analyse them by one-way ANOVA.Results:1.Among the 15 study subjects,2 cases(1 male,1 female)had poor waveform repetition and unstable waveforms,so they were not included in the statistical analysis.2.In the 8 subjects,the waveforms of the components of the cortical somatosensory evoked potentials collected at different stimulation sites of both lower limbs were same,including 2 males and 6 female.Statistical analysis found that after electrical stimulation of Kunlun point and posterior tibial nerve,the waveform,latency,and amplitude of each component of the evoked potential collected in the corresponding cortex are independent of gender;when the bilateral stimulation sites are different,the components of the corresponding cortical evoked potential collected The waveform,latency,and amplitude have nothing to do with the stimulus position.3.In the 5 subjects,the cortical evoked potentials generated by the stimulation of different parts of the lower limbs have opposite polarities.including 2 males and 6 female.Statistical analysis found that after electrical stimulation of Kunlun and posterior tibial nerve,the latency and amplitude of each component of wave of cortical somatosensory evoked potentials collected are independent of gender;when bilateral stimulation sites are different,the collected component waves of cortical somatosensory evoked potential of latency and amplitude of the stimulus have nothing to do with the stimulation position.4.The cortical evoked potentials obtained after stimulation of both lower limbs of 13 subjects were statistically analyzed,including 5 males and 8 females.Statistical analysis found that the latency and amplitude of each component wave in the cortical somatosensory evoked potential collected after electrical stimulation of the Kunlun and posterior tibial nerve are independent of gender;when the bilateral stimulation sites are different,the corresponding component waves of the head cortex evoked potential are generated.The lantency and amplitude of the stimulus have nothing to do with the stimulation position.Conclusion:1.The meridian phenomenon produced by electrical stimulation of Kunlun can stimulate and excite cortical nerves and generate corresponding cortical somatosensory evoked potentials.2.There is no significant difference in the conduction velocity between the meridian phenomenon produced by electrical stimulation of the Kunlun and the nerve impulse produced by electrical stimulation of the posterior tibial nerve,and there is no significant difference in the location and number of neurons they excite.3.There is no significant difference between the electrophysiological characteristics of the bladder meridian and the posterior tibial nerve.From this,an inference is made about the correlation between the meridian and nerve. |
