目的研究老年恶性肿瘤患者肠外营养相关中心静脉导管感染的发生率及危险因素。

Objective to investigate the prevalence of parenteral nutrition related central venous catheter infection in elder patients with malignant tumors, and explore the risk factors.

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综述了导管相关性血流感染的流行病学、危险因素、感染途径及预防策略。

It mainly summarized the epidemiology, risk factors, routes and prevention strategies of catheter-related bloodstream infection.

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