High Versus Standard Voltage Pulsed Radiofrequency for Cervical Nerve Roots Injection in Refractory Chronic Unilateral Cervical Radicular Pain

nvolved a high voltage PRF technique, where the voltage started at 65 V and could be adjusted up to 80 V based on patient tolerance. Both protocols involved two cycles of PRF application, with each cycle lasting 240 seconds and comprising alternating periods of current application and deactivation. The pulse rate frequency was set at 2 Hertz (Hz), resulting in two active phases/second (20 milliseconds (ms) of current application followed by 480 ms without stimulation)

A standard voltage PRF technique, administering PRF at a fixed voltage of 45 volts (V)