Dietrichs Espen
Nevrologisk avdeling, Nevroklinikken, Rikshospitalet-Radiumhospitalet, 0027 Oslo.
Tidsskr Nor Laegeforen. 2007 May 3;127(9):1228-31.
In the last ten years, increased understanding of the brain's plasticity has opened up new possibilities for post-stroke rehabilitation.
The article is based on a literature search in Medline, my own research and clinical experience.
Post-stroke brain plasticity includes synaptogenesis, change of function in pre-existing synapses, cortical reorganization and probably neurogenesis. All these changes are stimulated by activity. The brain may be more susceptible to plasticity changes shortly after damage has occurred. Clinical studies have shown that intensive rehabilitation training is better than moderate training to recover motoric functions. Cortex contralateral to the lesion is activated in post-stroke motor training, but the pattern of cortical activation is normalized as function is regained. The prognosis is better if some of the relevant motor circuits are left undamaged. Sensory stimulation may also enhance motor recovery.
The ideal form of rehabilitation training is still unclear, but we do know that post-stroke rehabilitation should start as soon as possible, with good motivation, sufficient intensity and quantity, and should be maintained over a long time.
在过去十年中,对大脑可塑性的深入理解为中风后康复开辟了新的可能性。
本文基于对医学文献数据库(Medline)的文献检索、我自己的研究以及临床经验。
中风后脑可塑性包括突触形成、既有突触功能的改变、皮质重组以及可能的神经发生。所有这些变化都由活动所激发。大脑在损伤后不久可能对可塑性变化更敏感。临床研究表明,强化康复训练在恢复运动功能方面优于适度训练。中风后运动训练时,损伤对侧的皮质会被激活,但随着功能恢复,皮质激活模式会恢复正常。如果一些相关运动回路未受损,预后会更好。感觉刺激也可能促进运动恢复。
康复训练的理想形式仍不明确,但我们知道中风后康复应尽早开始,要有良好的动机、足够的强度和量,并应长期坚持。