To investigate the predisposing factors of guiding catheter associated urinary tract infection (CAUTI), and to explore the best prevention and nursing measures.

Total of 130 patients with urethral catheterization in our hospital from October 2013 to October 2014 were selected. The risk factors of CAUTI such as the indwelling catheter days, urine collection bag replacement time and catheter replacement time were analyzed, respectively.

There were significance differences of infection rates in different retention times (χ²= 3.104, P = 0.000). And the hospitalized patients with indwelling catheter had significantly increased rate of guiding catheter infection; the best replacement time of urine collection bags were 2-7 d, and the rates of infection with different replacement time were with significant differences (χ²= 4.092, P = 0.003). The infection rates between the different catheter replacement time were with significant differences (χ²= 3.883, P = 0.001). The best catheter replacement time was once every 2 weeks, if with the weekly change and over 5 weeks change, the infection rates were increased significantly. The infection rates were significantly different in different age groups (χ²= 4.792, P = 0.000). Among the patients with indwelling catheter, infection rate of CAUTI was 12.5% which the patients younger than 30 years old ; which was 50% for the patients ≥ 60 years old.

The infection of catheter associated urinary tract were closely related to the indwelling catheter time, collecting duct replacement time, catheter replacement time and age distribution. The corresponding prevention and care measures should be taken to avoid the occurrence of CAUTI.