主动脉瓣狭窄三联征是指:() ["主动脉瓣区收缩期杂音,呼吸困难,胸痛","主动脉瓣区收缩期杂音,主动脉瓣喷射音,主动脉瓣区震颤","呼吸困难,心绞痛,晕厥","呼吸困难,胸痛,晕厥","心绞痛,晕厥,主动脉瓣区收缩期杂音"]
男,80岁。全口无牙,戴全口义齿近15年,因黏膜不适就诊。检查可见黏膜呈红亮色、水肿,有黄白色假膜,直接镜检见菌丝和芽胞。应选的治疗药物为() ["阿昔洛韦","维生素C","泼尼松","青霉素","制霉菌素"]
关于清除进入人体尚未吸收的毒物,哪项不正确()。 ["吞服腐蚀性毒物者不应催吐","昏迷患者插管洗胃可导致吸入性肺炎","清除肠道内毒物宜用硫酸镁或蓖麻油导泻","清洗皮肤宜用肥皂水或温水","清洗眼部宜用清水彻底冲洗"]
风湿性心脏病二尖瓣狭窄最常见的并发症是:() ["肺部感染","急性肺水肿","血栓栓塞","右心衰竭","感染性心内膜炎"]
男性,41岁。不规则发热4周余住院,最高体温41℃,最低37.5℃。在考虑病因时下列哪种疾病最不可能() ["细菌性感染","病毒性感染","恶性淋巴瘤","结缔组织病","肉芽肿性疾病"]
请说明备课的基本要领有哪些?