Colombo A L
Federal University of São Paulo, Infectious Diseases Division, SP, Brazil.
Braz J Infect Dis. 2000 Jun;4(3):113-8.
Hematogenous candidemia is an increasingly frequent problem among patients who are immunosuppressed, receiving parenteral nutrition and/or antibiotics, or who have invasive medical devices such as indwelling catheters. In Brazil, Candida albicans was responsible for 53/145 (37%) of candidemia in 6 different tertiary care hospitals. The most common non-albicans species were C. parasilosis (25%), C. tropicalis (24%), C. rugosa (5%) and C. glabrata (4%). The main risk factors for infection were antibiotic use and the presence of a central venous catheter. The main risk factors for mortality were patient age (older patients at risk) and not removing the catheter. Because of the great number of non-albicans species and varied degrees of antifungal drug sensitivity, laboratory identification and sensitivity testing is very important. All patients with documented candidemia should be treated. Drugs to be used are amphotericin B and/or fluconazole. Fluconazole resistance is not yet a problem in Brazil, perhaps because it is rarely used as prophylaxis due to its high cost. Intravenous catheters should be removed immediately if the patient has a short term catheter, or if the patient is clinically unstable due to the infection and has a long term catheter in place.
血源性念珠菌血症在免疫抑制患者、接受肠外营养和/或抗生素治疗的患者或有诸如留置导管等侵入性医疗设备的患者中是一个日益常见的问题。在巴西,白色念珠菌在6家不同的三级护理医院的念珠菌血症病例中占53/145(37%)。最常见的非白色念珠菌物种是近平滑念珠菌(25%)、热带念珠菌(24%)、皱落念珠菌(5%)和光滑念珠菌(4%)。感染的主要危险因素是使用抗生素和存在中心静脉导管。死亡的主要危险因素是患者年龄(老年高危患者)和未拔除导管。由于非白色念珠菌物种数量众多且对抗真菌药物的敏感性程度不同,实验室鉴定和药敏试验非常重要。所有确诊为念珠菌血症的患者均应接受治疗。使用的药物是两性霉素B和/或氟康唑。在巴西,氟康唑耐药性尚未成为问题,这可能是因为由于其成本高昂,很少用作预防用药。如果患者使用的是短期导管,或者由于感染导致临床不稳定且有长期导管在位,则应立即拔除静脉导管。