关于微循环的神经调节正确的有() ["A.外周血管末梢均受交感和副交感神经支配","B.血管壁末梢有α和β肾上腺受体","C.兴奋交感神经末梢释放去甲肾上腺素可引起血管收缩","D.肠系膜和肾血管肾上腺素能神经元分布丰富而脑血管则分布很少","E.刺激交感神经后α受体兴奋导致毛细血管前括约肌的血管阻力比次血管后括约肌阻力大2倍"]
男性,50岁,反复咳嗽,脓痰,伴发热40年,偶有咳血性脓痰,多次抗炎治疗后迁延不愈,胸片示左下叶基底段内多个囊性病变阴影,边界较清。患者入院行胸部CT增强时发现阴影,有异常动脉存在,则可基本明确诊断() ["A.肺囊肿","肺动静脉瘘","肺隔离症","支气管扩张","左下叶肺癌"]
尿毒症病人肌酐清除率7ml/min时,低蛋白饮食量为() ["0.1~0.2g/(kg·D.","0.3~0.5g/(kg·D.","0.6~0.7g/(kg·D.","0.8~0.9g/(kg·D.","1.0~1.5g/(kg·D."]
H-O变异属于() ["毒力变异","菌落变异","形态变异","鞭毛变异","耐药性变异"]
慢性肾炎、肾功能不全病史已数年,半月来尿量明显减少,强心利尿效果不佳,血压为24/16kPa(180/120mmHg),BUN29.3mmol/L(110mg/dl),血Cr884μmol/L(10mg/dl),CO2CP13.2mmol/L(30VOL%),给小剂量碳酸氢钠静滴后,出现呼吸困难,心率达128次/分,肺底少许湿啰音。最好选择() ["改用乳酸钠","改用口服碱性药物","改用利尿合剂","给10%葡萄糖酸钙","紧急血液透析"]
人人享受卫生保健是体现()把有限的卫生资源配置到最能产生社会效益和经济效益的做法是体现()