二尖瓣狭窄的超声特征是:() ["EF斜率加快,前后瓣同向运动","EF斜率减慢,前后瓣异向运动","EF斜率减慢,前后瓣同向运动","二尖瓣DE振幅增高,EF斜率加快","无特异征象"]
二维超声心动图胸骨旁长轴观可见:() ["主动脉瓣及肺动脉瓣","主动脉及二尖瓣","室间隔与房间隔","二尖瓣与三尖瓣","主肺动脉与房间隔"]
有关急性肝衰并发症的说法,错误的是()。 ["肝性脑病患者近一半有脑水肿","急性肝衰合并肾衰患者血BUN浓度常不高","各种类型的酸碱平衡失常均可发生于急性肝衰患者","急性肝衰常伴有高血糖","急性肝衰患者既可出现低钠血症,也可出现高钠血症"]
喉阻塞分度的主要根据是() ["病程长短","病变范围","患者喉腔大小","声嘶程度","呼吸困难程度"]
一旦确诊心脏骤停应立即:() ["找上级医师","鼻导管给氧","做心前区捶击","安装人工起搏器","开放静脉"]
急性肝炎引起血中胆红素增加属于()输入错误血型血液后引起血中胆红素增加属于()