肾素的分泌部位在() ["肾小球","近球细胞","下丘脑","致密斑","肾小管"]
患者,男性,40岁,胸闷憋气2个月余入院,查体:头面部肿胀,颈静脉怒张,气管居中,双肺呼吸音对称、清晰,无咳嗽、咳痰,胸片提示右肺门阴影,前上纵隔影增宽最后病理诊断证实为胸腺癌,属于WHO胸腺瘤分类的哪一型() ["A.A","AB","Bl","B2","B3","C"]
诊断急性呼吸窘迫综合征(ARDS)时,PaO/FiO应小于() ["350","300","250","200","150"]
呼吸衰竭定义指() ["PaO2<6.65kPa(50mmHg)和PaCO2>6.65kPa(50mmHg)","PaO2<6.65kPa(50mmHg),或伴有PaCO2>6.65kPa(50mmHg)","PaO2<8.0kPa(60mmHg)和PaCO2>6.65kPa(50mmHg)","PaO2<8.0kPa(60mmHg)和PaCO2>8.0kPa(60mmHg)","PaO2<8.0kPa(60mmHg),或伴有PaCO2>6.65kPa(50mmHg)"]
下列药物不能随尿排除的是() ["脂溶性药物","甘露醇","水溶性药物","蛋白结合率较高的药物","游离型药物"]
临床医学的主要研究对象是流行病学的主要研究对象是