OBJECTIVE : To observe the effect of propofol on the changes of excitatory amino acids ( EAA )( including glutamate , aspartate ) and glycine ( GIy ) metabolism induced by brain operation .
目的：观察异丙酚对颅脑手术创伤所致脑脊液兴奋性氨基酸（ExcitatoryAminoAcids，EAA）（主要包括谷氨酸，天门冬氨酸）和苷氨酸（glycine，Gly）水平的影响。
giy