Objective To analyze the reasons of catheter fracture of implantable vascular access devices and to explore the prevention and handling measures. Methods A retrospective analysis was carried in 3 887 adult patients with implantable vascular access devices and 13 had catheter fracture. The clinical features and causes were analyzed and the successful handling measures were summarized. Results Of 3 887 cases, a total of 13 (0.33%) catheter fracture occurred. The incidence rate of catheter fracture via subclavian jugular venipuncture was 3.70%,(6/162) , via internal jugular venipuncture was 0.18% (7/3 725), via internal jugular venipuncture was significantly lower than that via the subclavian venipuncture (χ2=47.505,P=0.000). There had no statistical differences between the left and right of the two puncture ways(P=0.707,0.682). Conclusions Catheter fracture is one of the serious complications in the process of use and maintenance of implantable vascular access device. Choosing appropriate surgical method, strengthen maintenance education, specificating the operation procedure, closing observation and other measures can not only reduce the occurrence of the catheter fracture, but also can dealt with catheter fracture in time, which could ensure the safety of patients' life.

Objective To explore the application of levofloxacin tube sealing in patients with venous port infection.Methods A total of 40 patients with venous port infection were ran-domly divided into observation group and control group.The control group was treated with antibi-otics,and the observation group was treated with levofloxacin tube sealing and systemic antibiotics. When drug sensitivity test returned,the control group was treated with sensitive antibiotics,and the observation group was treated with levofloxacin tube sealing and sensitive antibiotics.Infection condition,extubation rate,comfort and satisfactory degree toward nursing were compared between two groups.Results Disappearing time of infection symptoms and extubation rate in the observa-tion group were significantly shorter and less than those in the control group (P <0.05),and cura-tive effect and satisfactory degree toward nursing were significantly higher than those in the control group (P <0.05).Conclusion Levofloxacin tube sealing can effectively improve the infection symptoms of patients with venous port and reduce the extubation rate.

Objective To explore the effect of the brake type pillow on preventing the postoperative complication in breast cancer patients .Methods One hundred and sixty patients with modified radical mastectomy for breast cancer were divided into the control group and the observation group according to the random number table, each with 80 cases.The observation group received the brake type pillow , and the control group received the routine nursing .The incidence of postoperative subcutaneous drainage , the subcutaneous effusion , the skin flap necrosis and the paretic upper-limb edema were compared between two groups .Results The amount of postoperative subcutaneous drainage in the observation group was (276.59 ±163.10) ml, and was (431.72 ± 265.18) ml in the control group, and the difference was statistically significant (t=3.573,P<0.01).The incidence rate of subcutaneous effusion was 0.25%in the observation group , and was lower than 1.63%in the control group, and the difference was statistically significant (χ2 =8.901,P<0.01).The incidence rate of skin flap necrosis was 0.25% in the observation group, and was lower than 1.38% in the control group, and the difference was statistically significant (χ2 =6.782,P<0.01).No difference was found in the incidence of the paretic upper-limb edema between two groups (χ2 =0.592,P>0.05).Conclusions Application of the brake type pillow can reduce the subcutaneous drainage after the operation in breast cancer patients , and prevent the incidence of the subcutaneous effusion and the skin flap necrosis , and it is needed to further study to prevent the incidence of the paretic upper-limb edema .

Objective To explore the application of levofloxacin tube sealing in patients with venous port infection.Methods A total of 40 patients with venous port infection were ran-domly divided into observation group and control group.The control group was treated with antibi-otics,and the observation group was treated with levofloxacin tube sealing and systemic antibiotics. When drug sensitivity test returned,the control group was treated with sensitive antibiotics,and the observation group was treated with levofloxacin tube sealing and sensitive antibiotics.Infection condition,extubation rate,comfort and satisfactory degree toward nursing were compared between two groups.Results Disappearing time of infection symptoms and extubation rate in the observa-tion group were significantly shorter and less than those in the control group (P <0.05),and cura-tive effect and satisfactory degree toward nursing were significantly higher than those in the control group (P <0.05).Conclusion Levofloxacin tube sealing can effectively improve the infection symptoms of patients with venous port and reduce the extubation rate.

Objective To explore the effect of maintenance of interval time on catheter blockage and infection for intravenous infusion port patients during the off-treatment time. Methods A total of 100 patients with implanted ports, who drew blood well every time, bolus fluently and had informed consent, were divided into experimental group and control group by random number table method on average. The maintenance carried once in the control group every 4 weeks, while it happened in the experimental group every 12 weeks. We compared the catheter blockage and infection between two groups. Results There had no catheter completely block,Ⅲ grade catheter block and infection in the two groups during the 72 weeks, but Ⅰand Ⅱ grade blockage happened. In the experimental group, there was 3 patients having I grade catheter block, and that of the control group was 2 with no statistically significant difference between two groups (χ2 =0. 211,P>0. 05). In the experimental group, there was 1 patients hadⅡgrade catheter block, and that of the control group was 2 with no statistically significant difference between two groups (χ2 =0. 344,P >0. 05). Conclusions The intravenous infusion port patients had no correlation between the length of maintenance and blockage with infection. The maintenance carried once every 4 weeks is easily accepted for patients.