In a nutshell
This meta-analysis (an analysis of data combined from several similar studies) investigated the effect of repetitive transcranial magnetic stimulation (rTMS) on upper limb (arm and hand) motor function in patients recovering from a stroke.
Some background
Many stroke patients suffer long term disabilities, such as impaired motor function. This may severely affect daily living and drastically decrease a patients' quality of life. Nowadays, new strategies that may improve recovery are emerging.
Motor impairment after a stroke is thought to be a result of the unbalancing between the activities of the brain hemispheres (the two halfs of the brain). Repetitive transcranial magnetic stimulation (rTMS) is a painless, noninvasive method, involving magnetic pulses beamed at the two hemispheres at different intensities.This allows the level of activity in each hemisphere to be adjusted, restoring balance, and may help improving motor function after strokes.
Methods & findings
Eight studies, involving a total of 392 patients recovering from a stroke, were included in this analysis. Patient ability to perform motor functions was tested and scored before and after treatments. A significant improvement was noticed in the ability to perform motor skills after rTMS. Further analyses showed that the most benefit was derived in patients who suffered a subcortical stroke (a stroke in the deeper layer of the brain).
Only one of the trials reviewed here reported finding any side effects after rTMS. These included 2 patients reporting headaches, 1 patient showing increased anxiety, and 1 patient reporting increased fatigue.
The bottom line
Repetitive transcranial magnetic stimulation shows a beneficial effect on motor function recovery in patients after stroke.
The fine print
Some of the trials reviewed in this analysis were very small, and considered of low statistical confidence. Larger trials testing this technology are required for final conclusions.
What’s next?
Consult with your physician regarding rTMS treatment for the recovery of motor functions after a stroke.
Published By :
Stroke
Date :
Jun 19, 2012
