方法回顾性分析65例中心静脉置管建立血管通路及其临床应用，观察置管成功率、导管留置时间、置管相关并发症等。
Methods 65 CVC procedures were performed and the rate of success of CVC, the catheters survival life, complications of catheterization were observed retrospectively.
感染组导管留置时间、胃肠外营养、气管切开、住院时间及费用均高于对照组（P<0.05），白蛋白水平低于对照组（P<0.05）；
Catheter time of infection, parenteral nutrition(PN) rate, tracheotomy rate, hospital stay and costs were higher(P<0.05), albumin level lower than that of the control group(P<0.05);
观察留置时间的长短，以及静脉炎的发生、导管脱出、堵塞等情况。
Observe the length of retention time, as well as the occurrence of phlebitis, catheter extrusion, plug and so on.
目的探讨长期化学治疗患者延长经外周静脉穿刺中心静脉导管(PICC)留置时间的可行性。
Objective To evaluate the feasibility of prolonging the indwelling time of peripherally inserted central catheter (PICC) in patients with long-term chemotherapy.
方法：分析22例老年患者的25个气管导管各留置时间段与细菌培养结果。
Methods the retaining time in 25 bronchi from 22 cases of old patients and the results of bacterial culture were analyzed.
导管平均留置时间42天，无积液感染及并发症。
The catheters were placed for 42 days on average, No infections and complications of the fluid.
结论基础疾病、留置导管的时间、留置导管的位置是影响导管相关性血流感染发病率的危险因素。
Conclusion Coexistence of basic diseases, the retaining time, and the indwelling position are the risk factor that affected the morbidity of CRBSI.
结论基础疾病、留置导管的时间、留置导管的位置是影响导管相关性血流感染发病率的危险因素。
Conclusion Coexistence of basic diseases, the retaining time, and the indwelling position are the risk factor that affected the morbidity of CRBSI.
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