镁是钙的天然拮抗剂,目前已确知它有扩张血管作用。作者研究了镁在改善脑循环中的效果。治疗对象是42名发病3周以上、意识较为清晰的慢性期脑卒中患者。给病人静脉点滴2克溶于生理盐水的镁(硫酸镁),时间50分钟,点滴前、后测定脑的局部血流量(r-CBF)。结果,脑卒中患者的r-CBF增加20％以上, Magnesium is a natural calcium antagonist, it has been confirmed that it has dilated blood vessels. The authors studied the effect of magnesium in improving cerebral circulation. The treatment of 42 patients with more than 3 weeks of onset, more clearly aware of chronic stroke patients. To patients with intravenous drip 2 g dissolved in saline, magnesium (magnesium sulfate), the time of 50 minutes, before and after drip determination of brain blood flow (r-CBF). As a result, r-CBF in stroke patients increased by more than 20%