32岁孕妇,G1P0。孕14周,胎死宫内3天,乙型肝类病毒检测HBsAg(+)、HBcAg(+),即刻的处理是() ["立即羊膜腔内注射依沙吖啶","观察2~3周,保肝治疗","凝血功能检查保肝治疗","肝素小剂量应用","口服米非司酮"]
试述风湿热活动性实验室指标。
患儿,6岁,15kg。诊断为先心,室间隔缺损,肺动脉高压;拟在体外循环下行VSD纠治术。该先心患儿引起肺高压的因素是()。 ["A.肺血流增加","肺血管痉挛","肺静脉压增高","左心衰","肺动脉狭窄","肺动脉瓣狭窄"]
温度稀释法测定心排血量可采用() ["注射冷盐水","注射37℃盐水","应用带加热电阻丝的导管","A和B","A和C"]
静脉补钾时,补钾浓度不能超过()。 ["5%","3%","0.3%","0.5%","0.15%"]
促进剂是()常用定影剂是()常用的显影剂是()显定影液共用的保护剂是()显影液中的防灰剂是()