Maintaining a closed system in Foley catheter care primarily minimizes which risk?

• A. Urine leakage
• B. Catheter obstruction
• C. Infection risk
• D. Urine odor

Answer: (C)

Keeping the Foley drainage system closed is all about protecting the bladder from microbes during urine drainage. When the system stays sealed and isn’t opened or disconnected, there’s far less opportunity for bacteria from the perineal area or the environment to enter the catheter and ascend into the urinary tract. That direct protection against contamination is what lowers the risk of catheter-associated urinary tract infections, which is why infection risk is the primary benefit of a closed system.

Urine leakage, catheter obstruction, and urine odor can occur from other factors—leakage relates to how the catheter is secured and the bladder pressure; obstruction comes from debris or encrustation or tubing kinks; odor can stem from infection but also other metabolic factors. But the core advantage of maintaining a closed system is minimizing infection risk.