To study the pathogenic bacteria distribution conditions and its risk factors for patients with modified indwelling catheter-associated urinary tract infection.

168 patients received the modified indwelling catheter from March 2018 to March 2020 in the First Hospital of Handan were selected as research subjects. The urinary tract infection and pathogenic bacteria distribution conditions were observed. Clinical data about infection cases and non-infection cases were acquired. Logistic regression equation was used to analyze the risk factors of medified indwelling catheter-associated urinary tract infection.

Among 168 cases, 49 patients were occurred with urinary tract infection (29.17%), a total of 84 pathogenic bacteria strains were detected, including 50 gram-negative bacilli strains (59.52%), 24 gram-positive coccus strains (28.57%) and 10 fungus strains (11.90%). There were significant differences in age, hospital stay, time of indwelling catheter, diabetes, kidney stones, hypoproteinemia and the types of antibiotics used between patients with urinary tract infection and without urinary tract infection (P<0.05). Logistic regression equation results indicated that the risk factors of urinary tract infection included the age ≥60 years old, hospital stays ≥21 d, indwelling time ≥13 d, hypoproteinemia and types of antibacterial agents used ≥3.

Patients with modified indwelling catheter are prone to have urinary tract infection, of which the major pathogenic bacteria are gram-negative bacilli. There are multiple risk factors for urinary tract infection. Therefore, the specific intervention measures can reduce the incidence of urinary tract infection.