Effect of pulsed radiofrequency for postherpetic neuralgia

Y. H. Kim, C. J. Lee, S. C. Lee, J. Huh, F. S. Nahm, Heezoo Kim, Mi Kyoung Lee

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Background: Postherpetic neuralgia (PHN) is one of the most intractable pain disorders, particularly among elderly patients. Lesioning of dorsal root ganglion (DRG) using pulsed radiofrequency (PRF) has shown pain reduction for PHN. We assessed the efficacy of PRF lesioning of DRG for PHN via an open, nonrandomized study. Methods: Forty-nine patients with PHN refractory to conservative therapy were involved. After impedance and sensory electrical nerve stimulation thresholds were assessed, PRF was performed three times adjacent to the DRG of corresponding levels at 42 °C for 120 s under the fluoroscopic guidance. Pain ratings were conducted on a visual analogue scale at 4-, 8- and 12-week follow-up. The data were analyzed using the one-way ANOVA test. P<0.05 was considered to be statistically significant. Results: There was excellent pain relief (about 55%) at 4 weeks after PRF lesioning adjacent to the DRG and the effectiveness was maintained at the subsequent 12-week follow-up. The pain duration, age and stimulation level did not influence the outcome. There were no procedure-related complications. Conclusions: PRF lesioning of DRG showed significant pain relief compared with the conventional treatments in patients with intractable PHN. In order to elucidate the mode of action of PRF, further research is needed and the optimal electrical parameters of PRF have to be determined.

Original languageEnglish
Pages (from-to)1140-1143
Number of pages4
JournalActa Anaesthesiologica Scandinavica
Volume52
Issue number8
DOIs
Publication statusPublished - 2008 Sep 1

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Postherpetic Neuralgia
Spinal Ganglia
Pain
Intractable Pain
Somatoform Disorders
Electric Impedance
Visual Analog Scale
Electric Stimulation
Analysis of Variance
Research

ASJC Scopus subject areas

  • Anesthesiology and Pain Medicine

Cite this

Effect of pulsed radiofrequency for postherpetic neuralgia. / Kim, Y. H.; Lee, C. J.; Lee, S. C.; Huh, J.; Nahm, F. S.; Kim, Heezoo; Lee, Mi Kyoung.

In: Acta Anaesthesiologica Scandinavica, Vol. 52, No. 8, 01.09.2008, p. 1140-1143.

Research output: Contribution to journalArticle

Kim, Y. H. ; Lee, C. J. ; Lee, S. C. ; Huh, J. ; Nahm, F. S. ; Kim, Heezoo ; Lee, Mi Kyoung. / Effect of pulsed radiofrequency for postherpetic neuralgia. In: Acta Anaesthesiologica Scandinavica. 2008 ; Vol. 52, No. 8. pp. 1140-1143.
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