[名词解释] Horner征

重症肝炎的急性肝性昏迷，下列哪项降氨措施是无效的() ["A．谷氨酸钾钠静滴","B．精氨酸静滴","C．乳果糖口服","D．新霉素口服","E．生理盐水清洁灌肠"] 阿—罗瞳孔 脑中氨的主要去路是（） ["扩散入血","合成尿素","合成嘌呤","合成氨基酸","合成谷氨酰胺"] 下列哪种物质不是大脑的兴奋性神经递质() ["A．多巴胺","B．谷氨酸","C．乙酰胆碱","D．γ—氨基丁酸","E．去甲肾上腺素"] 跨阈步态 Horner征