- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04938245
Improving Spinal Cord Stimulation With ECAPS
Study Overview
Detailed Description
Study Type
Enrollment (Estimated)
Contacts and Locations
Study Contact
- Name: David Darrow, MD, MPH
- Phone Number: (612)-634-6666
- Email: darro015@umn.edu
Study Contact Backup
- Name: Alexander Herman, MD, PhD
- Phone Number: 612-625-1194
- Email: herma686@umn.edu
Study Locations
-
-
Minnesota
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Minneapolis, Minnesota, United States, 55455
- Recruiting
- University of Minnesota
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
Inclusion Criteria:
- Medically stable as determined by the principal investigator
- Scheduled to undergo externalization of spinal cord stimulation
- English-speaking
Exclusion Criteria:
- Scheduled for permanent implantation only without trial
- Have pacemakers or other neurostimulators
- Pregnancy
Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Observed Cohort
Participants with chronic pain scheduled to undergo externalized trial for assessment of spinal cord stimulation will undergo intraoperative stimulation and up to three postoperative visits where already externalized electrodes (used clinically for stimulation) will be used to record and stimulate using evoked complex action potentials (ECAPs) while also measuring other electrophysiological responses.
|
Intraoperatively, stimulation at 12 Hz will be performed as the leads are moved into the targeted position. Amplitude will be increased to 15 mA maximum total until a response is seen on any electrode and held for 10 seconds. Stimulation and recording will be performed using the Neuralynx stim/record system. Post-operatively, the electrodes will be tested for impedance by the clinical system and then they will be connected to the Neuralynx stim/record system. Electrode stimulation patterns will be applied with increasing amplitude until ECAPs responses are seen on recording electrodes. 42 Hz stimulation will be performed with an amplitude sweep of 0mA-10mA. At each amplitude, stimulation will be applied for 4 seconds followed by 2 seconds of rest. Pulse width will be varied from 30-450 microseconds to test effective amplitude. Bursting stimulation will be applied to detect differences in ECAPs as above. |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Feasibility Assessed by Enrollment
Time Frame: 2 weeks
|
Feasibility will be measured as a number of the number of enrolled participants who complete at least 80% of the planned assessments.
|
2 weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Acceptability Assessed by Survey
Time Frame: 2 weeks
|
Acceptability will be measured as the average rating of a five-point qualitative scale ranging from "Excellent" to "Very Poor."
Scores range with 1-5 with lower scores indicating greater acceptability.
|
2 weeks
|
Other Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Correlation of ECAP peak to peak signals to programming parameters
Time Frame: 2 weeks
|
2 weeks
|
Correlation of ECAP signals to pain relief
Time Frame: 2 weeks
|
2 weeks
|
Stability and reliability of ECAP sensing
Time Frame: 2 weeks
|
2 weeks
|
Reliability of ECAP across various levels intraoperatively
Time Frame: 2 weeks
|
2 weeks
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: David Darrow, MD, MPH, University of Minnesota Medical School Department of Neurosurgery
- Principal Investigator: Alexander Herman, MD, PhD, University of Minnesota Medical School Department of Psychiatry
- Principal Investigator: Tay Netoff, PhD, University of Minnesota Department of Biomedical Engineering
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimated)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- NEUROSURG-2021-29717
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
In line with recent requirements of scientific journals, preprocessed and anonymized data will be made available for the research community.
It will be deposited on the public repository Zenodo (or equivalent) for 5 years.
IPD Sharing Time Frame
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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