Schubert Claudia, Moosa Mohammed R
Department of Medicine, Faculty of Health Sciences, University of Stellenbosch, Cape Town, South Africa.
Hemodial Int. 2007 Oct;11(4):379-84. doi: 10.1111/j.1542-4758.2007.00204.x.
Infection is the most common cause of death in hemodialysis patients, after cardiovascular disease. Dialysis access infections, with secondary septicemia, contribute significantly to patient mortality. The most common source is temporary catheterization. Bacteremia occurs commonly in patients receiving hemodialysis, with infective endocarditis being a relatively uncommon, but potentially lethal complication. Valvular calcification is the most significant risk factor. The diagnosis of infective endocarditis is made clinically and confirmed with the echocardiographic modified Duke's criteria. The most common pathogen is Staphylococcus aureus and the mitral valve is the most common site. Staphylococcus aureus infective endocarditis is commonly associated with embolic phenomenon. A high index of suspicion is critical in the early recognition and management of infective endocarditis. However, prevention of bacteremia is undoubtedly the best strategy with the early placement of arteriovenous fistulae. In the case of temporary catheterization, the use of topical mupirocin or polysporin and gentamicin and/or citrate locking is beneficial. Although catheter salvage has not been studied in randomized trials, catheter removal remains standard therapy during bacteremia.
感染是血液透析患者仅次于心血管疾病的最常见死因。透析通路感染伴继发性败血症是患者死亡的重要原因。最常见的感染源是临时导管插入术。菌血症在接受血液透析的患者中很常见,感染性心内膜炎是一种相对少见但可能致命的并发症。瓣膜钙化是最重要的危险因素。感染性心内膜炎的诊断基于临床,并通过超声心动图改良杜克标准得以确诊。最常见的病原体是金黄色葡萄球菌,最常见的发病部位是二尖瓣。金黄色葡萄球菌感染性心内膜炎通常与栓塞现象有关。高度的怀疑指数对于感染性心内膜炎的早期识别和管理至关重要。然而,预防菌血症无疑是最佳策略,应尽早建立动静脉内瘘。对于临时导管插入术,使用局部莫匹罗星或多粘菌素及庆大霉素和/或柠檬酸盐封管是有益的。尽管导管挽救尚未在随机试验中进行研究,但在发生菌血症时拔除导管仍是标准治疗方法。