Transcutaneous Intercostal Nerve Stimulation in Spinal Cord Injury

NCT ID: NCT04506099

Last Updated: 2021-10-22

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

WITHDRAWN

Clinical Phase

NA

Study Classification

INTERVENTIONAL

Study Start Date

2020-07-17

Study Completion Date

2021-11-30

Brief Summary

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The purpose of this study is to determine the safety, feasibility, and effectiveness of electric stimulation of the nerves along the intercostal nerves on pain and spasticity in spinal cord injury patients.

Detailed Description

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Neuromodulation techniques are safely used as a treatment for neuropathic pain in chronic SCI. Neuromodulation techniques have also been safely and successfully used to strengthen the abdomen in stroke patients.10 Most similar to our TINS protocol is transcutaneous tibial nerve stimulation (TTNS), which has shown to mitigate the development of neurogenic bladder in acute SCI.6 However, neuromodulation is rarely performed in acute SCI, and, to our knowledge, neuromodulation has not been performed to prevent the development of chronic neuropathic pain. There has been little published regarding the effects of electric stimulation upon the trunk in acute SCI as a prevention for chronic neuropathic pain and spasticity. Gaps in the knowledge which we intend to fill are:

1. Safety and feasibility of TINS in acute SCI during inpatient rehabilitation.
2. Effectiveness of a 2-week TINS protocol in acute SCI based on changes between admission, discharge, and weekly numerical pain scores and spasticity questionnaire scores in those with TINS compared to sham TINS for 2-months.
3. Analysis of neuropathic pain medication dosages in those with and without TINS at admission, discharge, and 2 months post-discharge, and evaluation of morbidity at 2- months post-discharge

Conditions

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Neuropathic Pain SCI - Spinal Cord Injury

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Randomized sham-controlled trial
Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors
Study participants will be blinded to the stimulation parameters of the TINS. The research assistant/investigator will apply the electrodes and the PI will be blinded the stimulation setting as well. Unblinding is expected to occur after the 2 month follow up, at which point both subject and PI will be made aware of their group assignment.

Study Groups

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TINS Active

Electrical stimulation will be applied to the T6-T11 levels of intercostal nerves, as close to the level directly below the level of injury as possible. For example, a T7 level of injury will have TINS applied to the T8 level. A T2 level of injury will have TINS applied to the T6 level. Electrodes 2 inch by 4 inch will be placed according to anatomic landmarks with the negative electrode applied to the lateral ribcage and the positive electrode applied to the ventral aspect, verified with contraction of the rectus abdominis. The intensity level will be set to the amperage immediately under the threshold for motor contraction. If there is no contraction seen, patients will be excluded. In addition, if the patient perceives pain, the intensity will be lowered until comfortable. Stimulation frequency of 20 Hz and pulse width of 200ms in continuous mode will be used.

Group Type ACTIVE_COMPARATOR

TINS Active protocol

Intervention Type DEVICE

Electrical stimulation will be applied to the T6-T11 levels of intercostal nerves, as close to the level directly below the level of injury as possible. Electrodes 2 inch by 4 inch will be placed according to anatomic landmarks with the negative electrode applied to the lateral ribcage and the positive electrode applied to the ventral aspect, verified with contraction of the rectus abdominis. The intensity level will be set to the amperage immediately under the threshold for motor contraction. If there is no contraction seen, patients will be excluded. In addition, if the patient perceives pain, the intensity will be lowered until comfortable. Stimulation frequency of 20 Hz and pulse width of 200ms in continuous mode will be used.

Sham protocol

Electrical stimulation will be applied to the T6-T11 levels of intercostal nerves, as close to the level directly below the level of injury as possible until contraction is seen in the rectus abdominis. Stimulation frequency of 20 Hz and pulse width of 200ms in continuous mode will be used. Electrodes 2 inch by 4 inch will be placed according to anatomic landmarks with the negative electrode applied to the lateral ribcage and the positive electrode applied to the ventral aspect. The intensity level will be set to 1mA . If there is no contraction seen, patients will be excluded. In addition, if the patient perceives pain, the intensity will be lowered until comfortable.

Group Type SHAM_COMPARATOR

Sham protocol

Intervention Type DEVICE

Electrical stimulation will be applied to the T6-T11 levels of intercostal nerves, as close to the level directly below the level of injury as possible until contraction is seen in the rectus abdominis. Stimulation frequency of 20 Hz and pulse width of 200ms in continuous mode will be used. Electrodes 2 inch by 4 inch will be placed according to anatomic landmarks with the negative electrode applied to the lateral ribcage and the positive electrode applied to the ventral aspect. The intensity level will be set to 1mA . If there is no contraction seen, patients will be excluded. In addition, if the patient perceives pain, the intensity will be lowered until comfortable.

Interventions

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TINS Active protocol

Electrical stimulation will be applied to the T6-T11 levels of intercostal nerves, as close to the level directly below the level of injury as possible. Electrodes 2 inch by 4 inch will be placed according to anatomic landmarks with the negative electrode applied to the lateral ribcage and the positive electrode applied to the ventral aspect, verified with contraction of the rectus abdominis. The intensity level will be set to the amperage immediately under the threshold for motor contraction. If there is no contraction seen, patients will be excluded. In addition, if the patient perceives pain, the intensity will be lowered until comfortable. Stimulation frequency of 20 Hz and pulse width of 200ms in continuous mode will be used.

Intervention Type DEVICE

Sham protocol

Electrical stimulation will be applied to the T6-T11 levels of intercostal nerves, as close to the level directly below the level of injury as possible until contraction is seen in the rectus abdominis. Stimulation frequency of 20 Hz and pulse width of 200ms in continuous mode will be used. Electrodes 2 inch by 4 inch will be placed according to anatomic landmarks with the negative electrode applied to the lateral ribcage and the positive electrode applied to the ventral aspect. The intensity level will be set to 1mA . If there is no contraction seen, patients will be excluded. In addition, if the patient perceives pain, the intensity will be lowered until comfortable.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Acute tSCI paraplegia within 4 weeks of injury (n=22)
* 18-75 years old
* Neurologic levels T1-T10
* English speaking
* Admitted to TIRR with pain medications
* TINS can elicit visible or palpable abdominal muscle contraction

Exclusion Criteria

* Subjects with pacemakers, defibrillators, insulin pumps, and similar devices
* History of peripheral neuropathy
* History of premorbid symptoms of peripheral neuropathy (numbness and/or tingling in the lower extremities, sharp/jabbing/burning pain in the lower extremities, sensitivity to touch, lack of coordination, lack of sensation, muscle weakness, etc.)
* History of nervous system disorder (i.e. prior SCI, stroke, brain injury, degenerative diseases such as Parkinson's disease, etc.)
* Ventilator dependent respiration
* Inability to speak
* Non-English speakers
* Pregnancy
* History of chronic pain
* Intolerant to electric stimulation
* Intolerant to the trial sessions
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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The University of Texas Health Science Center, Houston

OTHER

Sponsor Role lead

Responsible Party

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Argyrios Stampas, MD

Spinal Cord Injury Medicine Research Director

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Argyrios Stampas, MD

Role: PRINCIPAL_INVESTIGATOR

UTHealth

Locations

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The University of Texas Health Science Center at Houston

Houston, Texas, United States

Site Status

Countries

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United States

References

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Other Identifiers

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HSC-MS-20-0048

Identifier Type: -

Identifier Source: org_study_id