Abstract:Objective: To investigate the status of pain associated with pulsed radiofrequency (PRF) therapy and explore the effects of intravenous lidocaine on pain. Methods: 206 patients who received PRF treatment were selected for investigation. The visual analog scale (VAS) scores, heart rate (HR) and mean arterial pressure (MAP) were recorded before, during and at 0, 1 and 2 hours after the operation (T0, T1, T2, T3 and T4). Patient satisfaction and the number of cases requiring vasoactive drugs were also recorded. 30 patients diagnosed with trigeminal neuralgia and 30 patients with cervicogenic headache were selected and divided into lidocaine group (group L = 30) and control group (group C = 30) by whether injecting lidocaine. VAS scores, HR and MAP were recorded before, during and at 0, 1, and 24 hours after operation (t0, t1, t2, t3, and t4). The satisfaction related with PRF treatment were noted after PRF treatment. Venous blood was taken at t0, t2, and t4 to measure interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α) and norepinephrine (NE) content. Results: Compared with other time, VAS score, HR and MAP were increased during PRF treatment . The VAS score of group L was lower than that of group C at t1, t3 and t4. At t1 and t2, the MAP and HR of group L were lower than those of group C. The concentration of IL-1β and TNF-α in group L were lower than those in group C at t4; the level of NE in group L was lower than that in group C at t2. The rate of satisfaction in group L was significantly higher than that in group C. There was no significant difference in adverse reactions between two groups. Conclusions: Intravenous infusion of lidocaine can reduce PRF-related pain by reducing the inflammatory factors.