全球范围内由于恶性肿瘤而接受放化疗的患者中中性粒细胞减少(粒减)极其常见,不明原因的发热常常是这些患者感染时的惟一征象。在未获得病原学证据之前必须争分夺秒地开始经验性抗感染治疗,以控制病情,降低重症感染的病死率。经验性抗感染的治疗策略并非经治医生的臆想,而应分 Neutropenia (granulocytopenia) is extremely common in patients undergoing chemoradiation due to malignancy worldwide and unexplained fever is often the only sign of infection in these patients. In the absence of etiological evidence before the fight against time to start the empirical anti-infective therapy to control the disease and reduce the mortality rate of severe infections. Empirical anti-infective treatment strategy is not the doctor’s imagination, but should be divided