Comparing Ultrasound-Guided Transgluteal Nerve Block to Standard Care for Emergency Department Patients With Low Back Pain and Sciatic Radiculopathy: A Randomized Controlled Trial
Led by University of California, San Francisco · Updated on 2026-06-02
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4 weeks
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What this Trial Is About
Researchers are evaluating the effectiveness of an ultrasound-guided transgluteal sciatic nerve block compared to standard care for adult patients experiencing sciatic back pain who visit the emergency department. The main purpose is to determine if this nerve block improves pain better than the usual treatments in these patients. The study is a randomized trial conducted by the University of California, San Francisco, focusing on adults with acute or acute-on-chronic sciatica pain.
Participants are randomly assigned to one of two groups: one receiving an ultrasound-guided transgluteal sciatic nerve block using 10-20 mL of 0.2% ropivacaine injected near the affected nerve, and the other receiving standard emergency department pain management, which may include oral or intravenous NSAIDs, acetaminophen, opioids, or muscle relaxants. These treatments are delivered during the emergency department visit.
During the study, participants will be asked about their pain levels and to walk a short timed distance to assess ambulatory status. Pain scores will be recorded at 30 minutes after treatment, at the decision point of hospital admission or discharge (up to 6 hours), and at 24 and 48 hours after the emergency visit. Researchers will also track ambulatory status before disposition and at 24 and 48 hours, as well as any emergency department return visits within 30 days. The total participation time varies according to these follow-up periods.
CONDITIONS
Brief Title
Comparing Ultrasound-Guided Transgluteal Nerve Block to Standard Care
Who Can Participate
Age: 18Years +
All Genders
Eligibility Criteria
You may qualify if you...
Adults aged 18 years and older
Presenting to the emergency department with acute or acute-on-chronic pain consistent with sciatica, defined as one-sided pain radiating from the lower back or buttock down the leg
Pain score of 5 or higher on the Numeric Rating Scale
You will not qualify if you...
Known allergy to study medications such as local anesthetics
Having a bleeding disorder or currently taking blood thinners
Suspected or confirmed spinal infection or tumor
Neurological problems including bowel or bladder dysfunction or leg weakness
Unable to provide informed consent
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Your Study Journey
Screening
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person) during emergency department presentation
Treatment
Duration - Up to 6 hours during the emergency department stay
Participants receive either an ultrasound-guided transgluteal sciatic nerve block or standard emergency department analgesic management for low back pain and sciatica.
1 treatment visit (in-person)
Follow-up
Duration - Up to 30 days after emergency department visit
Participants are followed after treatment to assess pain, ambulatory status, and emergency department bounceback.
3 follow-up contacts at 24 hours, 48 hours, and 30 days after the emergency department visit
The Efficacy of Ultrasound-Guided Transgluteal Sciatic Nerve Blocks for Sciatic Radiculopathy Pain in the Emergency Department: A Multicenter Prospective Study.
Andrew J Goldsmith, Jeffrey Merz-Herrala, Jamie Gullikson...