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目的 观察皮下隧道在减少深静脉导管相关性感染（ｃａｔｈｅｔｅｒ—ｒｅｌａｔｅｄ ｉｎｆｅｃｔｉｏｎ Ｃ Ｒ Ｉ）中的作用。方法 采用连续样本，按区组随机化分组对照研究的方法将２６０ 例需施行深静脉穿刺置管术的老年患者分成两组。１３０ 例采用自创的经简便皮下隧道（长度５ｃｍ ）后股静脉置管（试验组），１３０ 例非经皮下隧道股静脉置管（对照组）。分别记录两组置管后局部皮肤感染例数、导管头细菌培养阳性例数和外周血细菌培养阳性例数。结果 试验组和对照组平均留管时间分别为２９９７±１２８１、２８９５±１０７９ 天，两组比较无显著性差异（ Ｐ＞ ００５）；试验组和对照组皮肤感染发生率分别为１０１％ 和９２％ ，组间亦无显著性差异（χ２＝ ００４， Ｐ＞ ００５），导管头感染发生率对照组６９％ 显著高于试验组１５％ （χ２＝ ４６５， Ｐ＜ ００５）。结论 经长度为５ｃｍ 的皮下隧道后深静脉置管在减少 Ｃ Ｒ Ｉ发生中有一定的作用。
Objective To observe the role of subcutaneous tunnel in reducing catheter-related infection C R I. Methods A continuous sample of 260 elderly patients undergoing deep venous catheterization was divided into two groups according to the randomized block-controlled study. One hundred and thirty-three patients were treated with a simple subcutaneous tunnel (5 cm in length), a femoral vein catheter (experimental group), and 130 non-percutaneous tunnel femoral vein catheters (control group). The number of cases of local skin infections after catheterization, the positive cases of bacterial culture of catheter head and the positive cases of bacterial culture of peripheral blood were recorded. Results The average duration of tube stay in the experimental and control groups was 2997 ± 1281 and 2895 ± 1079 days, respectively, with no significant difference between the two groups (P> 005). The skin of the experimental group and the control group The incidence of infection was 101% and 92% respectively. There was no significant difference between the two groups (χ2 = 004, P> 005). The incidence of catheter infection in control group was significantly higher than that of control group The test group 1 5% (χ 2 = 4 65, P <0 05). Conclusions Deep vein cannulation after 5 cm length of subcutaneous tunnel may play a role in reducing the incidence of C R I.