腰椎穿刺有哪些禁忌证?
我国目前主要的居家护理服务形式是() ["以医院为基础的居家护理服务","家庭病床","以社区为基础的居家护理服务","独立形态的居家护理服务","居家照护机构"]
正常人卵磷脂小体() ["1/3","2/3视野","1/2视野","<1/2视野","布满整个视野"]
因子Ⅷ缺乏症传统上是指()。 ["原发性血小板减少性紫癜","继发性血小板减少性紫癜","血友病甲","血友病乙","血友病丙"]
对牙周兼性厌氧菌及微需氧菌感染无效的是() ["四环素","二甲胺四环素","螺旋霉素","洗必泰","甲硝唑"]
简述过度换气的基本操作程序。