Treatment of Neuropathic Pain Using Pulsed Radiofrequency: A Meta-analysis

2016 · Mixed · High evidence

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MixedHigh evidencePaper 1450

This meta-analysis of 12 randomized controlled trials (592 patients) reported that pulsed radiofrequency (PRF) performed better than control for postherpetic neuralgia across several timepoints for pain scores and some response-rate measures, and side effects…

Study snapshot

Publicationmanual · 2016
Study typemeta_analysis
Reported directionMixed
Evidence ratingHigh

Abstract

Treatment of Neuropathic Pain Using Pulsed Radiofrequency: A Meta-analysis Shi Y, Wu W. Treatment of Neuropathic Pain Using Pulsed Radiofrequency: A Meta-analysis.Pain Physician. 2016 Sep-Oct;19(7):429-44. Abstract BACKGROUND: Neuropathic pain (NP) is a major public health problem worldwide. Because of the unclear mechanism of NP, its treatment is one of the most difficult medical problems. As a targeted, noninvasive, safe therapy, pulsed radiofrequency (PRF) provides a new method for the treatment of NP; however, its effect on this treatment still lacks support from evidence-based medicine. OBJECTIVE: To conduct a meta-analysis of available randomized controlled trials and to evaluate the effectiveness and clinical utility of PRF for the treatment of NP. STUDY DESIGN: Meta-analysis. SETTING: All selected studies were randomized controlled trials. METHOD: A systematic and comprehensive database search was performed of the PubMed, CENTRAL, EMBASE.com, Cochrane Library, Chinese Biomedical Literature, and Wanfang databases for literature published from the establishment of the databases to December 19, 2015. According to inclusion and exclusion criteria, the results of randomized controlled trials supporting PRF for NP treatment were collected. The risk of bias tool described in the Cochrane Handbook version 5.1.0 was used to assess the quality of each trial. Meta-analysis was performed using RevMan 5.3 software. RESULTS: A total of 12 randomized controlled trials involving 592 patients met the inclusion criteria. Overall, the results of the meta-analysis showed that, compared with the control group, PRF had a better effect on postherpetic neuralgia (PHN) in terms of pain score (one week, one month, and 3 months), excellent and good rate (one day, one month), and efficiency rate (one day). But PRF did not have a better effect on radicular pain in pain score (3 months). Side effects were less frequently found with the PRF treatment. LIMITATIONS: Although we repeatedly tested the key words and used a manual method to prevent the loss of studies, due to the limitation of the included studies, some of the data were insufficient to complete the meta- analysis, and we were unable to obtain the original data from some studies. Some studies did not report the blind design, which decreased the quality of the current study. CONCLUSION: PRF did not have a better effect on radicular pain, and PRF is an effective and safe therapeutic alternative for the analgesia of PHN. However, for a high recurrence rate over a long period, repeated PRF treatment has limitations. ncbi.nlm.nih.gov

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typemeta_analysis
Effect directionmixed
PopulationPatients with neuropathic pain (including postherpetic neuralgia and radicular pain)
Sample size592
ExposureNot supplied
Evidence strengthHighConfidence: 78% · Peer reviewed: yes

Main findings

This meta-analysis of 12 randomized controlled trials (592 patients) reported that pulsed radiofrequency (PRF) performed better than control for postherpetic neuralgia across several timepoints for pain scores and some response-rate measures, and side effects were less frequent with PRF. PRF did not show a better effect than control for radicular pain at 3 months.

Outcomes measured

  • Pain score
  • Excellent and good rate
  • Efficiency rate
  • Side effects
  • Recurrence rate (long-term)

Limitations

  • Some data from included studies were insufficient to complete the meta-analysis.
  • Original data could not be obtained from some studies.
  • Some studies did not report blinding, decreasing study quality.
View raw extracted JSON
{
  "publication_year": null,
  "study_type": "meta_analysis",
  "exposure": {
    "band": null,
    "source": "pulsed radiofrequency therapy",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Patients with neuropathic pain (including postherpetic neuralgia and radicular pain)",
  "sample_size": 592,
  "outcomes": [
    "Pain score",
    "Excellent and good rate",
    "Efficiency rate",
    "Side effects",
    "Recurrence rate (long-term)"
  ],
  "main_findings": "This meta-analysis of 12 randomized controlled trials (592 patients) reported that pulsed radiofrequency (PRF) performed better than control for postherpetic neuralgia across several timepoints for pain scores and some response-rate measures, and side effects were less frequent with PRF. PRF did not show a better effect than control for radicular pain at 3 months.",
  "effect_direction": "mixed",
  "limitations": [
    "Some data from included studies were insufficient to complete the meta-analysis.",
    "Original data could not be obtained from some studies.",
    "Some studies did not report blinding, decreasing study quality."
  ],
  "evidence_strength": "high",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "stance": "neutral",
  "stance_confidence": 0.66,
  "summary": "This meta-analysis evaluated randomized controlled trials of pulsed radiofrequency (PRF) for neuropathic pain. Across 12 trials (592 patients), PRF was reported to improve outcomes for postherpetic neuralgia compared with controls, with fewer side effects. PRF did not show a better effect for radicular pain at 3 months, and the authors note limitations related to incomplete data and limited reporting of blinding.",
  "key_points": [
    "The study is a meta-analysis of randomized controlled trials assessing PRF for neuropathic pain.",
    "Twelve trials with 592 patients were included based on searches through December 19, 2015.",
    "PRF was reported to reduce pain scores for postherpetic neuralgia at one week, one month, and three months versus control.",
    "PRF showed better response-rate outcomes for postherpetic neuralgia at some early timepoints compared with control.",
    "PRF did not show a better pain outcome for radicular pain at three months.",
    "Side effects were reported less frequently with PRF treatment.",
    "The authors report limitations including insufficient data and incomplete reporting of blinding in some trials."
  ],
  "categories": [
    "Clinical research",
    "Therapeutic applications",
    "Radiofrequency procedures",
    "Pain management"
  ],
  "tags": [
    "Pulsed Radiofrequency",
    "Neuropathic Pain",
    "Postherpetic Neuralgia",
    "Radicular Pain",
    "Meta-analysis",
    "Randomized Controlled Trials",
    "Pain Score",
    "Adverse Effects",
    "Cochrane Risk of Bias"
  ],
  "keywords": [
    "pulsed radiofrequency",
    "neuropathic pain",
    "postherpetic neuralgia",
    "radicular pain",
    "meta-analysis",
    "randomized controlled trial",
    "pain score",
    "side effects"
  ],
  "suggested_hubs": [],
  "social": {
    "tweet": "Meta-analysis (12 RCTs; 592 patients) reports pulsed radiofrequency improved outcomes for postherpetic neuralgia vs control with fewer side effects, but showed no better effect for radicular pain at 3 months.",
    "facebook": "A meta-analysis of 12 randomized trials (592 patients) found pulsed radiofrequency (PRF) improved pain and response outcomes for postherpetic neuralgia compared with controls and had fewer reported side effects, while showing no better effect for radicular pain at 3 months.",
    "linkedin": "Meta-analysis of 12 randomized controlled trials (n=592) evaluating pulsed radiofrequency for neuropathic pain: PRF was associated with better outcomes for postherpetic neuralgia and fewer side effects versus controls, but no better effect for radicular pain at 3 months; limitations included incomplete data and limited blinding reporting."
  }
}
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: Not supplied
PubMed: Not supplied

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