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The Effect of Sensory Stimulation Threshold on the Efficacy of Pulsed Radiofrequency Applied to the Dorsal Root Ganglion in Patients with Chronic Lumbar Radicular Pain

NCT06756893 · Status: NOT_YET_RECRUITING · Type: OBSERVATIONAL · Enrollment: 150

Last updated 2025-01-03

No results posted yet for this study

Summary

Lomber dorsal root ganglion pRF is an interventional treatment options in the treatment of lumbar radicular pain. The goal of this study is to investigate the effect of sensory threshold outcomes on pain severity during dorsal root ganglion pulsed radiofrequency (DRG-pRF). It will also learn effects about disability due to chronic LRP. The main questions it aims to answer are:

Does lower sensory threshold result in lower pain scores and chronic LRP related disability?

Participants will:

Take DRG-pRF procedure for 4 minutes. Visit the clinic at 1. and 3. month for questionnaries.

Conditions

  • Dorsal Root Ganglion
  • Pulsed Radiofrequency
  • Chronic Pain
  • Lumbar Radiculopathy
  • Lumbar Spinal Stenosis

Interventions

PROCEDURE

Dorsal Root Ganglion Pulsed Radiofrequency

Using C-arm fluoroscopy, a 22G, 10 cm RF needle with a 5 mm active tip will be directed from lateral to medial towards the vertebral foramen. Once the needle reaches the lateral edge of the pedicle shadow, the C-arm will be adjusted to a lateral view to confirm that the needle is located at the craniodorsal portion of the intervertebral foramen. Sensory stimulation will be delivered through the RF generator at 50 Hz, and paresthesia will be sought in the corresponding dermatome at values between 0.4-0.8 mA. After achieving paresthesia, motor stimulation at 2 Hz will be applied, and the location near the DRG will be confirmed if motor stimulation is not elicited at values less than 1.5 times the sensory threshold. Pulsed RF will then be applied for 4 minutes at a setting of 45 V, 20 ms pulse width, and 2 Hz frequency. Following the application, needle will be directed slightly anterior and after appropriate contrast flow, dexamethasone will be injected.

Sponsors & Collaborators

  • Ankara University

    lead OTHER

Principal Investigators

  • Güngör Enver Özgencil, MD · Ankara University Medicine Faculty Anesthesiology and Reanimation Department

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-01-01
Primary Completion
2025-07-01
Completion
2025-10-01

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06756893 on ClinicalTrials.gov