Conclusions Strict aseptic operation, reducing the indwelling time, using TPN in reason, and enhancing the resistance to disease are very important to prevent blood vessel related infection.

• 结论严格的无菌操作、缩短置管时间及合理使用胃肠外营养、增加机体抵抗力对防止血管相关性感染具有重要意义。