Which statement describes a risk factor for developing a urinary tract infection (UTI)?

• A. Males are typically infected via the intraluminal route from a contaminated drainage bag.
• B. The duration of catheterization does not affect bacteriuria when strict sterile insertion is used.
• C. Females are typically infected via the intraluminal route from a contaminated drainage bag.
• D. Diabetes is not a risk factor for infection.

Answer: (A)

In catheter-associated UTIs, bacteria often reach the bladder by traveling through the lumen of the catheter from the drainage system. When a drainage bag or its connections are contaminated or the closed drainage system is breached, organisms can enter the catheter lumen and ascend into the bladder, creating an infection. This intraluminal contamination pathway is a recognized risk factor because it directly introduces microbes into the catheter and urinary tract.

Understanding this helps connect prevention steps: maintain a closed drainage system, keep the bag below bladder level, practice aseptic technique during bag changes, and minimize catheter time, as each additional day increases the chance of contamination and infection. Diabetes can also increase infection risk in general due to immune factors, but the key point here is the intraluminal route from a contaminated drainage bag as a mechanism of developing a UTI.