[问答题,简答题] 试述急性额窦炎周期性头痛形成的机制。

子痫首选（） ["静脉注射地西泮","苯妥英钠","乙琥胺","静脉注射硫酸镁","氯丙嗪"] 生物转化作用 风湿热最常累及的瓣膜是（） ["A.主动脉瓣","B.二尖瓣","C.肺动脉瓣","D.三尖瓣","E.以上均不是"] 听觉失认评定内容不包括（） ["无意义声音配对","环境音","音乐","语声","噪音"] 起效最快的是（） ["苯巴比妥","地西泮","司可巴比妥","硫喷妥钠","巴比妥"] 试述急性额窦炎周期性头痛形成的机制。