Vasculitic neuropathy (VN) results from inflammation and destruction of the walls of predominantly small vessels with subsequent ischemic damage of peripheral nerves. VN is painful in vast majority of patients and the pain is intractable with pharmacotherapy in about 40% of cases. Repetitive Transcranial Magnetic Stimulation (rTMS) is a noninvasive method of modulation of brain plasticity and is regarded as one of alternative methods to alleviate pain associated with various kind of neuropathies. The purpose of this study is to compare the effectiveness of analgesic effect of rTMS in vasculitic neuropathy with sham stimulation.
Vasculitic neuropathies (VN) are a group of disorders resulting from inflammation of predominantly small vessels with destruction of their walls and subsequent ischemic damage of peripheral nerves. Neural damage may or may not coexist with the damage of other organs. Examples of conditions associated with VN include diabetes, microscopic polyangiitis, eosinophilic granulomatosis with polyangiitis (Churg-Strauss), granulomatosis with polyangiitis (Wegener's), rheumatoid arthritis, systemic lupus erythematosus and others. VN is painful in about 80% of patients of whom 40% suffer from the pain intractable with pharmacological therapy. Repetitive Transcranial Magnetic Stimulation (rTMS) is a noninvasive method of modulation of brain plasticity. In this method, series of magnetic stimuli are delivered to the cerebral cortex, where they turn to electric current and depolarize repetitively the targeted neurons. If the stimulation is repeated during subsequent days it is capable to modify the activity of targeted cortical area for weeks or even months and by this way to achieve therapeutic effect. rTMS is widely regarded as one of alternative methods to alleviate pain associated with various kind of neuropathies. The purpose of this study is to compare the effectiveness of analgesic effect of rTMS in vasculitic neuropathy with sham stimulation.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
High frequency rTMS over the primary motor area to induce the long term potentiation of primary motor areas for the muscles of upper extremity.
Sham stimulation to mimic the high frequency rTMS over the primary motor area.
Jagiellonian University Medical College, Department of Neurology
Krakow, Poland
Numeric Pain Severity Scale after rTMS
Total score 10, with higher scores representing more severe pain. Change from baseline score in the Numeric Pain Severity Scale to the measurement taken after finishing rTMS.
Time frame: Before rTMS, immediately after (on same day) finishing rTMS.
Numeric Pain Severity Scale First Follow Up
Total score 10, with higher scores representing more severe pain. Change from baseline score in the Numeric Pain Severity Scale to the measurement taken two weeks after finishing rTMS.
Time frame: Before rTMS, two weeks after finishing rTMS
Numeric Pain Severity Scale Second Follow Up
Total score 10, with higher scores representing more severe pain. Change from baseline score in the Numeric Pain Severity Scale to the measurement taken four weeks after finishing rTMS.
Time frame: Before rTMS, four weeks after finishing rTMS
Visual Analog Scale of Pain Severity
An analog scale of the length of 100 milimeter. Total score of 100, with higher scores representing more severe pain. Change through the study.
Time frame: Through study completion, an average of 10 weeks
Hospital Anxiety and Depression Scale after rTMS
Total score 64, with higher scores representing more severe depression. Change from baseline score in the Hospital Anxiety and Depression Scale to the measurement taken after finishing rTMS.
Time frame: Before rTMS, immediately after (on same day) finishing rTMS.
Hospital Anxiety and Depression Scale First Follow Up
Total score 64, with higher scores representing more severe depression. Change from baseline score in the Hospital Anxiety and Depression Scale to the measurement taken two weeks after finishing rTMS.
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Enrollment
3
Time frame: Before rTMS, two weeks after finishing rTMS
Hospital Anxiety and Depression Scale Second Follow Up
Total score 64, with higher scores representing more severe depression. Change from baseline score in the Hospital Anxiety and Depression Scale to the measurement taken four weeks after finishing rTMS.
Time frame: Before rTMS, four weeks after finishing rTMS
36-Item Short Form Health Survey after rTMS
Total score, range 0 to 800, with lower values representing a worse outcome. Change from baseline score in the 36-Item Short Form Health Survey to the measurement taken after finishing rTMS.
Time frame: Before rTMS, immediately after (on same day) finishing rTMS.
36-Item Short Form Health Survey First Follow Up
Total score, range 0 to 800, with lower values representing a worse outcome. Change from baseline score in the 36-Item Short Form Health Survey to the measurement taken two weeks after finishing rTMS.
Time frame: Before rTMS, two weeks after finishing rTMS
36-Item Short Form Health Survey Second Follow Up
Total score, range 0 to 800, with lower values representing a worse outcome. Change from baseline score in the 36-Item Short Form Health Survey to the measurement taken four weeks after finishing rTMS.
Time frame: Before rTMS, four weeks after finishing rTMS
Quality of Life in Neurological Disorders (Neuro-QoL) Upper Extremity Function after rTMS
Total score, range 0 to 100, with lower values representing a worse outcome. Change from baseline score in Neuro-Qol Upper Extremity Function to the measurement taken after finishing rTMS.
Time frame: Before rTMS, immediately after (on same day) finishing rTMS.
Quality of Life in Neurological Disorders (Neuro-QoL) Upper Extremity Function First Follow Up
Total score, range 0 to 100, with lower values representing a worse outcome. Change from baseline score in Neuro-Qol Upper Extremity Function to the measurement taken two weeks after finishing rTMS.
Time frame: Before rTMS, two weeks after finishing rTMS
Quality of Life in Neurological Disorders (Neuro-QoL) Upper Extremity Function Second Follow Up
Total score, range 0 to 100, with lower values representing a worse outcome. Change from baseline score in Neuro-Qol Upper Extremity Function to the measurement taken four weeks after finishing rTMS.
Time frame: Before rTMS, four weeks after finishing rTMS
Assessment of pain threshold to electric stimuli after rTMS
Electrocutaneus stimulation with gradually increasing intensity from 0mA until a patient reports that the sensation has become painful. Change from baseline pain threshold to the measurement taken after finishing rTMS.
Time frame: Before rTMS, immediately after (on same day) finishing rTMS.
Assessment of sensory threshold to electric stimuli after rTMS
Electrocutaneus stimulation with gradually increasing intensity from 0mA until a patient reports the first nonpainful tactile sensation. Change from baseline sensory threshold to the measurement taken after finishing rTMS.
Time frame: Before rTMS, immediately after (on same day) finishing rTMS.
Assessment of pain threshold to electric stimuli First Follow Up
Electrocutaneus stimulation with gradually increasing intensity from 0mA until a patient reports that the sensation has become painful. Change from baseline pain threshold to the measurement taken two weeks after finishing rTMS.
Time frame: Before rTMS, two weeks after finishing rTMS
Assessment of sensory threshold to electric stimuli First Follow Up
Electrocutaneus stimulation with gradually increasing intensity from 0mA until a patient reports the first nonpainful tactile sensation. Change from baseline sensory threshold to the measurement taken two weeks after finishing rTMS.
Time frame: Before rTMS, two weeks after finishing rTMS
Assessment of pain threshold to electric stimuli Second Follow Up
Electrocutaneus stimulation with gradually increasing intensity from 0mA until a patient reports that the sensation has become painful. Change from baseline pain threshold to the measurement taken four weeks after finishing rTMS.
Time frame: Before rTMS, four weeks after finishing rTMS
Assessment of sensory threshold to electric stimuli Second Follow Up
Electrocutaneus stimulation with gradually increasing intensity from 0mA until a patient reports the first nonpainful tactile sensation. Change from baseline sensory threshold to the measurement taken four weeks after finishing rTMS.
Time frame: Before rTMS, four weeks after finishing rTMS
Assessment of cold sensation threshold to cold stimuli after rTMS
Stimulation with cold temperature stimuli, gradually colder, starting from from 32 degree Celcius until patient will report that he feels cold. Change from baseline cold sensation threshold to the measurement taken after finishing rTMS.
Time frame: Before rTMS, immediately after (on same day) finishing rTMS.
Assessment of pain threshold to cold temeprature stimuli after rTMS
Stimulation with cold temperature stimuli, gradually colder, starting from 32 degree Celcius until patient starts to perceive stimuli as painful. Change from baseline pain threshold to the measurement taken after finishing rTMS.
Time frame: Before rTMS, immediately after (on same day) finishing rTMS.
Assessment of cold sensation threshold to cold temeprature stimuli First Follow Up
Stimulation with cold temperature stimuli, gradually colder, starting from from 32 degree Celcius until patient will report that he feels cold. Change from baseline cold sensation threshold to the measurement taken two weeks after finishing rTMS.
Time frame: Before rTMS, two weeks after finishing rTMS
Assessment of pain threshold to cold temeprature stimuli First Follow Up
Stimulation with cold temperature stimuli, gradually colder, starting from 32 degree Celcius until patient starts to perceive stimuli as painful. Change from baseline pain threshold to the measurement taken two weeks after finishing rTMS.
Time frame: Before rTMS, two weeks after finishing rTMS
Assessment of cold sensation threshold to cold temeprature stimuli Second Follow Up
Stimulation with cold temperature stimuli, gradually colder, starting from from 32 degree Celcius until patient will report that he feels cold. Change from baseline cold sensation threshold to the measurement taken four weeks after finishing rTMS.
Time frame: Before rTMS, four weeks after finishing rTMS
Assessment of pain threshold to cold temeprature stimuli Second Follow Up
Stimulation with cold temperature stimuli, gradually colder, starting from 32 degree Celcius until patient starts to perceive stimuli as painful. Change from baseline pain threshold to the measurement taken four weeks after finishing rTMS.
Time frame: Before rTMS, four weeks after finishing rTMS
Assessment of warmth sensation threshold to warm temeprature stimuli after rTMS
Stimulation with warm temperature stimuli, gradually warmer, starting from from 32 degree Celcius until patient will report that he feels warmth. Change from baseline warmth sensation threshold to the measurement taken after finishing rTMS.
Time frame: Before rTMS, immediately after (on same day) finishing rTMS.
Assessment of pain threshold to warm temeprature stimuli after rTMS
Stimulation with warm temperature stimuli, gradually warmer, starting from 32 degree Celcius until patient starts to perceive stimuli as painful. Change from baseline pain threshold to the measurement taken after finishing rTMS.
Time frame: Before rTMS, immediately after (on same day) finishing rTMS.
Assessment of warmth sensation threshold to warm temeprature stimuli First Follow Up
Stimulation with warm temperature stimuli, gradually warmer, starting from from 32 degree Celcius until patient will report that he feels warmth. Change from baseline warmth sensation threshold to the measurement taken two weeks after finishing rTMS.
Time frame: Before rTMS, two weeks after finishing rTMS
Assessment of pain threshold to warm temeprature stimuli First Follow Up
Stimulation with warm temperature stimuli, gradually warmer, starting from 32 degree Celcius until patient starts to perceive stimuli as painful. Change from baseline pain threshold to the measurement taken two weeks after finishing rTMS.
Time frame: Before rTMS, two weeks after finishing rTMS
Assessment of warmth sensation threshold to warm temeprature stimuli Second Follow Up
Stimulation with warm temperature stimuli, gradually warmer, starting from from 32 degree Celcius until patient will report that he feels warmth. Change from baseline warmth sensation threshold to the measurement taken four weeks after finishing rTMS.
Time frame: Before rTMS, four weeks after finishing rTMS
Assessment of pain threshold to warm temeprature stimuli Second Follow Up
Stimulation with warm temperature stimuli, gradually warmer, starting from 32 degree Celcius until patient starts to perceive stimuli as painful. Change from baseline pain threshold to the measurement taken four weeks after finishing rTMS.
Time frame: Before rTMS, four weeks after finishing rTMS
Bilateral Dynamometric Assessment of the strength of the index finger flexion after rTMS
Change from baseline strength of the index finger flexion to the measurement taken after finishing rTMS.
Time frame: Before rTMS, immediately after (on same day) finishing rTMS.
Bilateral Dynamometric Assessment of the strength of the foot extension after rTMS
Change from baseline strength of the foot extension to the measurement taken after finishing rTMS.
Time frame: Before rTMS, immediately after (on same day) finishing rTMS.
Bilateral Dynamometric Assessment of the strength of the index finger flexion First Follow Up
Change from baseline strength of the index finger flexion to the measurement taken two weeks after finishing rTMS.
Time frame: Before rTMS, two weeks after finishing rTMS
Bilateral Dynamometric Assessment of the strength of the foot extension flexion First Follow Up
Change from baseline strength of the foot extension to the measurement taken two weeks after finishing rTMS.
Time frame: Before rTMS, two weeks after finishing rTMS
Bilateral Dynamometric Assessment of the strength of the index finger flexion Second Follow Up
Change from baseline strength of the index finger flexion to the measurement taken four weeks after finishing rTMS.
Time frame: Before rTMS, four weeks after finishing rTMS
Bilateral Dynamometric Assessment of the strength of the foot extension Second Follow Up
Change from baseline strength of the index foot extension to the measurement taken four weeks after finishing rTMS.
Time frame: Before rTMS, four weeks after finishing rTMS