• Conf Proc IEEE Eng Med Biol Soc · Jan 2013

    Effects of low amplitude pulsed radiofrequency stimulation with different waveform in rats for neuropathic pain.

    • W T Lin, C H Chang, C Y Cheng, M C Chen, Y R Wen, C T Lin, and C W Lin.
    • Conf Proc IEEE Eng Med Biol Soc. 2013 Jan 1;2013:3590-3.

    AbstractPulsed-radiofrequency (PRF) electrical stimulation has been widely used for chronic pain treatment. It has been demonstrated with advantages of low temperature over traditional continuous radiofrequency (CRF) lesions with higher amplitude and mono polar electrode to treat pain in clinics (frequency 500 KHz, Pulse duration 20 msec, Amplitude 45 V, Treatment 2 min). We compare the effects of different pulse waveforms and PRF parameters (Pulse duration 25 ms, Treatment duration 5 min, low amplitude of 2.5/1.25 V) with a miniature bi-polar electrode on Dorsal root ganglion (DRG). The pain relief effect due to PRF is evaluated by using Von Frey method for the pain threshold index based on behavior response to mechanical stimulus of various strengths. Experimental results of Von Frey Score show that the sinusoidal group has higher responses than the square wave one. Both fast and secondary expressed proteins of c-fos and pp38 are measured from spinal cord tissue sectioning slides to characterize the pain associated inflammatory responses and their responses due to PRF stimulation.

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