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People with a Spinal Cord Injury can develop chronic pain within months of the injury. Up to 80% of the patients will develop chronic pain called "central pain" and describe the pain as: burning, stabbing, or "like electricity." Central pain mechanism is unknown and therefore treatment is currently not effective.
It is hypothesized that chronic pain is associated with impaired function of the systems regulating pain, however, this hypothesis has not been tested among Spinal Cord Injury patients. Presence of such a connection, between the regulating system dysfunction and central pain, will help both predicting the risk of central pain and develop a treatment.
The current research objective is to make several sensory measurements which will measure the functioning mechanisms of regulation and control of the pain. These measurements are accepted throughout the world and are based on psychophysical assessment of patients. these Measurements are designed to assess whether Spinal Cord Injury chronic central pain patients demonstrate impairment in the regulation of pain. Finding such a link between central pain and impaired regulation could shed light on the mechanism of central pain. In addition, these measurements are designed to assess whether fresh spinal cord injury patients that have not yet developed central pain demonstrate impairment in the regulation of pain immediately after the injury. By repeated assessments of pain regulation capabilities, which will be made to fresh Spinal Cord Injury patients during the first months of injury, and comparing the results of these measurements between those who will develop center pain and those who will not, we could identify indicators for predicting the risk of central pain. Another goal of the study is to investigate the efficacy of central pain treatment, using a TENS, when the parameters of the TENS treatment will be built according to the level of functioning of the regulating systems of the individual.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Fresh Spinal Cord Injury patients | Experimental | Spinal Cord Injury patients that are currently admitted to the rehabilitation unit with three weeks or less since injury that will over go several tests and will fill out several questionnaires. |
|
| Chronic Spinal Cord Injury patients | Experimental | Spinal Cord Injury patients with one year or more since injury that will over go several tests and will fill out several questionnaires |
|
| Healthy volunteers | Active Comparator | Healthy subjects that will over go several tests and will fill out several questionnaires |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Thermal stimulation | Device | Stimulation using a Thermal Sensory Analyzer: 2001, Maddock ltd., Israel. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Sensitivity to thermic pain | Minimum temperature at which the patient reported pain. The subject will press a button once feeling pain. pain will be reported using a visual analog scale - a pain scale between 1-10. | 5 minutes |
| Pain suppression capability | Reduction of pain in the presence of another stimulus. pain will be reported using a visual analog scale - a pain scale between 1-10. | 5 minutes |
| Habituation to tonic stimulation | Gradient decrease in pain rating. pain will be reported using a visual analog scale - a pain scale between 1-10. | 5 minutes |
| Temporal summation of pain | Standard rating of pain among several stimuli. pain will be reported using a visual analog scale - a pain scale between 1-10. | 5 minutes |
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Inclusion Criteria:
for all subjects:
for chronic Spinal Cord Injury subjects:
for chronic Spinal Cord Injury subjects:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Gabriel Zeilig, MD | Sheba Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Sheba Medical Center rehabilitaion facility | Ramat Gan | Israel |
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| Mechanical stimulation | Device | Stimulation using Semmes-Weinstein-Monofilament Touch Test Sensory Evaluators |
|
| Transcutaneous Electrical Nerve Stimulator (TENS) | Device | A portable stimulator designed to Physical treatment of pain. TENS - Cedar rehab X2. Chattanooga group.USA. |
|
| ID | Term |
|---|---|
| D010146 | Pain |
| D000092122 | Bronchiolitis Obliterans Syndrome |
| ID | Term |
|---|---|
| D009461 | Neurologic Manifestations |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D000092124 | Organizing Pneumonia |
| D001989 | Bronchiolitis Obliterans |
| D001988 | Bronchiolitis |
| D001991 | Bronchitis |
| D001982 | Bronchial Diseases |
| D012140 | Respiratory Tract Diseases |
| D008173 | Lung Diseases, Obstructive |
| D008171 | Lung Diseases |
| D006086 | Graft vs Host Disease |
| D007154 | Immune System Diseases |
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