ABSTRACT
Objective To investigate the correlation between catheter indwelling time and catheter-related bloodstream infection in patients with ICU. Methods Chosen 60 cases of peripheral arterial catheterization and indwelling arterial catheters because of illness need more than 7 days of age, from September 2015 to January 2016 who were treated in respiratory and critical care medicine. Numbered in the order of entry (1-60), andnumber of singular werein the control group and number of even were in the experimental group. In the control group, the catheter was removed and the catheter was replaced at 7 days after the catheter was inserted,the experimental group continued to use the catheter for 7 days until the patient did not need to remove the catheter. Microbial culture was carried out in two groups of catheter tip,The bacterial setting rate of catheter tip culture was compared between the two groups. Results The control group of bacterial colonization rate was 7.14％ (2/28), the experimental group of bacterial colonization rate was 10.34％ (3/29), the difference between the two groups was not statistically significant (χ2=0.000, P>0.05). Conclusions Nursing care of patients with indwelling arterial catheters just follow the principle of maximum aseptic artery puncture and disinfection treatment, and patients without clinical symptoms need not to prevent catheter-related infection by peripheral arterial catheter replacement.