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CHARACTERISTICS OF PAIN-EVOKED POTENTIALS IN PATIENTS WITH TRIGEMINAL NEURALGIA AGED 40 TO 60 YEARS
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Abstract
Objective: To describe the waveform characteristics of trigeminal pain-related evoked potentials in healthy individuals aged 40 to 60 years, and to determine the specific features of these potentials in patients with trigeminal neuralgia within the same age group. Subjects and Subjects and methods: This was designed as cross-sectional study in 25 patients diagnosed with trigerminal neuralgia who came for examination and treatment from July 2019 to September 2020. The control group included 25 volunteers who came for a health check-up at Hanoi Medical University Hospital without having neuromuscular diseases and agreed to participate in the study. Results: The waveform include of a Np peak which is the highest peak of negative waves going up on base line and a Pp peak which is the lowest peak of positive waves going down on base line. In addition, we recorded in 4% of cases another waveform with positive wave 2 peaks. Patients with trigerminal neuralgia have a statistically significant prolongation of the latent period and a decrease in the amplitude of waves on all 3 branches of the diseased side of the trigeminal nerve after painful stimulation compared to the control group and compared to the healthy side of patients with trigeminal neuralgia.
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Keywords
Nociceptive Evoked Potentials, Trigeminal Neuralgia
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