某男性、67岁,患阻塞性肺气肿12年余,近日着凉后,咳嗽、咳黄痰、气喘加剧,伴发热,上腹胀痛,纳差,肝大伴压痛,下肢轻度水肿,心电图偶见房性过早搏动下列各项治疗中最重要的是() ["A.抗心律失常","强心剂","保肝治疗","抗生素治疗","平喘、镇咳、祛痰"]
细胞外液中主要的阳离子是() ["K+","Na+","Ca2+","Mg2+","Fe2+"]
急性感染性多发性神经炎的主要表现是() ["迟缓性瘫痪,手套-袜子型感觉障碍","迟缓性瘫痪,节段型感觉障碍","迟缓性瘫痪,偏身型感觉障碍","痉挛性瘫痪,手套-袜子型感觉障碍","痉挛性瘫痪,节段型感觉障碍"]
视网膜母细胞瘤的MR表现是() ["T1加权像呈高信号","T1加权像呈中等信号或稍高信号","T1加权像呈低信号","T2加权像呈高信号","需行GD-DTPA增强"]
引起脑栓塞最常见的原因是() ["脂肪栓塞","心源性栓子","羊水栓塞","癌栓","空气栓塞"]
简要病史:男性,62岁,发热1个月,左颈部肿块18天。