肠镜检查前如何准备？
既可平肝又可利尿的药物是（） ["龙骨","牡蛎","珍珠母","罗布麻","刺蒺藜"]
具有平肝息风、清肝明目、散血解毒功效的药物是（） ["羚羊角","牛黄","珍珠","天麻","钩藤"]
患者，女，35岁，小便淋沥涩痛，尤其排尿时尿道疼痛剧烈，舌淡，苔薄白，脉弦，首选（） ["车前子","海金沙","萹蓄","石韦","金钱草"]
患者，女，28岁，产后7天，乳少，乳房胀痛，小便短涩，淋沥涩痛，舌淡，苔薄白，脉弦，宜首选（） ["车前子","冬葵子","薏苡仁","石韦","金钱草"]
结肠镜检查的适应证、禁忌证有哪些？
