Which action best reduces the risk of a catheter-associated urinary tract infection?

• A. Maintain a closed drainage system and secure the catheter to the leg
• B. Limit fluids to 1 liter per day
• C. Use feminine deodorants after bathing
• D. Douche daily after catheter removal

Answer: (A)

Maintaining a closed drainage system and securing the catheter to the leg is the most protective action because it preserves the sterile barrier around the urinary tract and prevents microbial entry or movement along the catheter. When the system stays closed and the catheter is well secured, there are fewer opportunities for bacteria to contaminate the urinary tract during drainage or handling, and there’s less tugging that can loosen the tubing or introduce pathogens.

The other options don’t reduce risk and can even raise it. Limiting fluids doesn’t reliably prevent urinary tract infections and can lead to dehydration or concentrated urine. Using feminine deodorants or douching after catheter removal can irritate mucosal surfaces or disrupt natural flora, which may increase infection risk rather than lower it. In practice, along with keeping the system closed, it’s important to maintain sterile technique and remove the catheter as soon as it’s no longer needed.