男性,66岁,3年前患急性前壁心肌梗死,1年前诊断为慢性心力衰竭,左室射血分数33%。患者平时无症状,应当长期服用的药物不包括() ["β受体阻滞剂","阿司匹林","钙拮抗剂","螺内酯(安体舒通)","血管紧张素转换酶抑制剂"]
贵金属材料制作铸造金属全冠相对于镍铬合金而言,优点不包括(). ["生物相容性更高","材料化学稳定性更高","铸造精密度更好","备牙量要求较少","以上均不是"]
下列不是外感腰痛的致病病邪的是() ["风","寒","湿","热","燥"]
急性炎症反应中,最先出现的血管变化是() ["A.血流停滞","B.血管扩张","C.血流缓慢","D.血管收缩","E.血流加快"]
Crohn病最常见的并发症是() ["急性肠穿孔","中毒性结肠扩张","直肠结肠癌变","肠梗阻","腹腔内脓肿"]
房性期前收缩与房室交界性期前收缩如何鉴别?