患儿,男,3岁。因喷射状呕吐半天,无热抽搐2小时入院。无产伤窒息史,无脑外伤史,无抽搐史,智力落后,语言障碍,仅能叫妈、爸。双亲健康,非近亲婚配。体检:浅昏迷状,BP22/12kPa,头围54cm,左侧鼻唇沟变浅,口角右侧歪斜,左上肢肌力Ⅳ级,左侧 Children, male, 3 years old. Due to jet-like vomiting for a long time, no convulsions 2 hours admission. No history of asphyxiation and injury, no history of brain injury, no history of convulsions, mental retardation, language barriers, can only be called mother, father. Parents healthy, non-relatives marriage. Physical examination: shallow coma, BP22 / 12kPa, head circumference 54cm, left nasolabial fissure shallow, right skew angle mouth, left upper limb muscle strength grade Ⅳ, left