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Repetitive Transcranial Magnetic Stimulation (rTMS) in the Treatment of Medication-Resistant Neuropatic Pain

Published online by Cambridge University Press:  16 April 2020

M. Klírová
Affiliation:
Prague Psychiatrie Center and 3rd Faculty of Medicine, Charles University of Prague, Prague, Czech Republic
J. Fricová
Affiliation:
1st Medical Faculty of Charles University Prague, Prague, Czech Republic
P. Šóš
Affiliation:
Prague Psychiatrie Center and 3rd Faculty of Medicine, Charles University of Prague, Prague, Czech Republic
T. Novák
Affiliation:
Prague Psychiatrie Center and 3rd Faculty of Medicine, Charles University of Prague, Prague, Czech Republic
B. Kohútová
Affiliation:
Prague Psychiatrie Center and 3rd Faculty of Medicine, Charles University of Prague, Prague, Czech Republic
V. Masopust
Affiliation:
Central Military Hospital Prague, Prague, Czech Republic
M. Haeckel
Affiliation:
Central Military Hospital Prague, Prague, Czech Republic
R. Rokyta
Affiliation:
3rd Medical Faculty of Charles University Prague, Department of Normal Pathological and Clinical Physiology, Prague, Czech Republic

Abstract

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Introduction

Transcranial magnetic stimulation (TMS) is a non-invasive method that induces functional changes in a relatively small area of the cerebral cortex. It is supposed that the effect of the method in therapy of neuropatic pain is based on the induction of spinothalamic tract inhibiton, which leads to the symptom withdrawal.

Aim

To prove the clinical and electrophysiological effect of rTMS in the therapy of chronic neuropatic pain.

Methods

29 patients with medication-resistant neuropatic pain were examined by Visual analog scale (VAS), McGill Pain Questionnaire (MPQ) and QST(Quantitative sensory Testing, consisted of von Frey and thermic treshold examination),then treated by high frequency rTMS in the study using double-blind randomized sham-controlled parallel design. rTMS parameters: 5 rTMS sessions (2 weeks treatment), where each session consisted of three 10 Hz rTMS series using:

  1. 1) 85%MT (motor treshold),

  2. 2) 90%MT and

  3. 3) 95%MT.

Each rTMS série consisted of 20 pulses in 12 trains. Location of the active coil was administered over the contralateral motor cortex, directed specifically to facial area of homunculus (according to funcional location). Sham coil was angled 90° degrees away from the skull.

Results

Confirmation of a significant decrease of VAS item in active group, trend to improvement in tactile sensation of severed patient faces. The changes of thermic treshold were not found. Sham rTMS did not show any trend for improvement.

Conclusion

Although no general recommendations can be drawn based on our result, our study is another one that suggest rTMS should be considered as an effective and safe treatment option for chronic neuropatic pain.

Type
P02-549
Copyright
Copyright © European Psychiatric Association 2011
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