Changes in Cerebral Blood Flow in Patients Treated With Spinal Cord Stimulation for Low Back and Leg Pain

March 29, 2022 updated by: Boston Scientific Corporation

Changes in Regional Cerebral Blood Flow as an Indicator of Neuronal Activity in Patients Treated With Spinal Cord Stimulation for Low Back and Leg Pain

The primary objective of this study is to identify the brain regions in which activity is affected by SCS. Baseline cerebral blood flow scans with the device turned off will be generated compared to scans produced with the device operating at parameters which produce optimal coverage of the painful areas. The relationship between cerebral blood flow and pain rating scores will be evaluated in both conditions.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Spinal Cord Stimulation (SCS) is known to be effective in pain management. Some evidence exists that SCS may cause changes in cerebral blood flow. This study will be a novel PET examination of activity in brain regions affected by SCS. This activity will be compared with the pain intensity and distribution. Further, by examining cerebral blood flow at different doses of stimulation, relationships between SCS, brain perfusion, and pain relief can be drawn. This study will contribute to the elucidation of the mechanism of action of SCS.

Study Type

Interventional

Enrollment (Actual)

15

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • North Carolina
      • Winston-Salem, North Carolina, United States, 27103
        • Center for Clinical Research

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Have had one or more back surgery procedures.
  • Have used an active Precision SCS device for chronic low back and bilateral leg pain for at least 6 weeks.
  • Have bilateral leg pain.
  • Have a baseline VAS of >4 (without stimulation).
  • Have greater than 50% reduction in pain with SCS at optimal settings
  • Be 18 years of age or older.
  • Have the cognitive and functional capability to operate the controls for the device, to comply with directions during the study, and willing to participate in all study activities.
  • Be capable of reading and understanding patient information materials and giving written informed consent.

Exclusion Criteria:

  • Have any significant medical condition that is likely to interfere with study procedures or likely to confound evaluation of study endpoints.
  • Have undergone a surgical lead revision or had any Precision components replaced after initial implantation.
  • Are allergic to any of the injected media.
  • Are pregnant or lactating.
  • Have any contraindication to the PET scan procedure itself or exposure to the intravenous radioactive tracer (H215O).
  • Have participated in any drug or device trial in the last 4 weeks or are currently participating in another drug or device trial.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Precision Spinal Cord Stimulation and PET Scan
Positron emission tomography (PET) scan imaging procedures to assess Spinal Cord Stimulation.
Other: Precision Spinal Cord Stimulation and PET Scan
Imaging procedure to assess spinal Cord Stimulation.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Cerebral Blood Flow and VAS With Optimal Paresthesia Coverage Compared With SCS Off
Time Frame: Within a few hours
Within a few hours

Secondary Outcome Measures

Outcome Measure
Time Frame
Cerebral Blood Flow and VAS With Partial Paresthesia Coverage and Subthreshold Stimulation Compared With Optimal Coverage and With SCS Off
Time Frame: Within a few hours
Within a few hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Boston Scientific Corporation

Investigators

  • Principal Investigator: Richard Rauck, MD, Center for Clinical Research

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 1, 2007

Primary Completion (Actual)

April 1, 2009

Study Completion (Actual)

April 1, 2009

Study Registration Dates

First Submitted

January 2, 2007

First Submitted That Met QC Criteria

January 2, 2007

First Posted (Estimate)

January 4, 2007

Study Record Updates

Last Update Posted (Actual)

March 31, 2022

Last Update Submitted That Met QC Criteria

March 29, 2022

Last Verified

May 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • SCS0305

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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