SPA与免疫球蛋白有较强亲和力的部位是() ["Fab段","Fc段","F(ab’)2段","重链","轻链"]
二维超声心动图诊断二尖瓣狭窄的主要依据是()。 ["瓣口开放面积变小","瓣叶增厚","腱索粗大","瓣膜活动受限","左房明显增大"]
与经典的根治性颈清扫术不同,功能性改良根治性颈淋巴结清扫术,应保留颈部哪些结构()。 ["颈内静脉","副神经","颈外静脉","胸锁乳突肌","颈丛神经"]
男,65岁,进行性黄疸3个月,伴中上腹持续性胀感,夜间平卧时加重,消瘦显著。查体:慢性消耗性面容。皮肤、巩膜黄染。腹平坦,脐右上方深压痛,未及块物,Courvoisier征阳性。首先考虑的诊断是() ["慢性胆囊炎","胆石症","原发性肝癌","胃癌","胰头癌"]
夹层动脉瘤最有特征的声像图是()。 ["双腔征","血栓","狭窄的腔","内膜瓣","动脉壁溃疡形成"]
腹腔穿刺术操作方法