Methods:Blood trace elements Cu,Se,Zn and Fe contents before and after treatment were investigated in a Tongmai Yizhi Capsules group(n= 50)and a Hydergine group(n=30).

• 方法:设立通脉益智胶囊(50例)和喜德镇(30例)两个治疗组,于治疗前后检测两组患者铜、硒、锌和铁等微量元素的含量。