鉴别肾盂肾炎和下尿路感染,下列哪一项最有价值() ["全身症状轻重","尿培养的阳性率高低","膀胱刺激症状的轻重","尿常规中白细胞的数量","尿常规中是否有白细胞管型"]
治疗接触性皮炎最首要的措施是() ["口服抗组胺药物","口服糖皮质激素","外用溶液湿敷","脱离可疑致敏物或刺激物","葡萄糖酸钙静脉滴注"]
影响心室肌前负荷的因素有() ["A.心肌收缩性","B.总血容量","C.肺循环阻力","D.心率","E.机械通气模式"]
女性,52岁,发热3天,咳嗽,少量痰,痰中带少量血。体格检查:体温38℃,血压18/11kPa,右上肺闻及湿啰音,心脏无异常。胸片示:近肺门处右上肺块影,为明确诊断可行() ["A.肺功能测定","胸部B型超声波","MRI","纤维支气管镜","支气管动脉造影"]
影响心室肌后负荷的因素有() ["外周血管阻力","扩血管药","大动脉弹性","体循环阻力","缩血管药"]
研究细菌性状应选用()细菌合成抗生素、外毒素多在()