Résumé
Background : Both low-frequency repetitive transcranial magnetic stimulation (rTMS) and intensive occupational therapy (OT) have been recently reported to be clinically beneficial for post-stroke patients with upper limb hemiparesis. We have already reported that the function of the paralyzed upper limb in the post-stroke hemiplegic patients was improved after a 15-day hospitalization protocol, named NEURO-15. In this present study, we investigated whether two courses (2X) of NEURO-15 were superior to a single one in therapeutic efficacy. Methods: During NEURO-15, each patient was scheduled to receive 21 treatment sessions of 20-min low-frequency rTMS followed by 120-min intensive OT daily. Low-frequency pulses of 1 Hz were applied to the motor cortex of the nonlesional hemisphere. Fugl-Meyer Assessment (FMA), log performance time of the Wolf Motor Function Test (WMFT) and modified Ashworth Scale (MAS) were evaluated on the days of admission and discharge. The first NEURO-15 was given to 16 apoplectic hemiplegic patients whose Brunnstrom Recovery Stage in their fingers ranged from IV to V. After an average of 13.6 months, the second NEURO-15 was administered to all 16 patients. Results : The 2X protocol was completed by all patients without any adverse effects. After the first course of NEURO-15, all patients showed improvement in their paralyzed upper limb function ; improvements which remained until the second NEURO-15 course. The second NEURO-15 course yielded even further improvement in the paralyzed upper limb function. Conclusions : Our proposed combination treatment is a safe, feasible, and clinically useful neurorehabilitative intervention for post-stroke patients with upper limb hemiparesis when administered as both a single application or as a 2X protocol. The effectiveness of the 2X protocol or even more frequent application of NEURO-15 courses needs to be further explored.
Résumé
We performed a 15 day protocol of low-frequency repetitive transcranial magnetic stimulation (rTMS) combined with intensive occupational therapy in hemiplegic upper limbs in poststroke and investigated the effect of cerebral blood flow using single photon emission computed tomography (SPECT). Seventeen chronic stroke patients were studied with SPECT at rest before and 4 weeks after undergoing the 15 day protocol. Before and after the treatment, Fugl-Meyer Assessment (FMA) score and Wolf Motor Function Test (WMFT) -Log performance time showed a significant improvement. The specific areas with a significant increase in perfusion in the affected hemisphere were the insula (BA 13), the precentral gyrus (BA 44) and the cerebellum. In the nonaffected hemisphere, perfusion was significantly increased in the lingual gyrus and cerebellum. On the other hand, perfusion was significantly decreased in the middle frontal gyrus (BA 6), precentral gyrus (BA 4) and postcentral gyrus (BA 3) in the nonaffected hemisphere. It was suggested that low-frequency rTMS combined with intensive occupational therapy effects the cerebral blood flow and contributes to improving upper limb hemiplegia after stroke.