A nurse manager is developing a protocol to reduce the Incidence of UTIs. In clients who have an indwelling urinary catheter. Which of the following interventions should the nurse include in the protocol?

Maintaining a closed drainage system with sealed connections is the most evidence-based intervention for preventing catheter-associated urinary tract infections (CAUTIs). The closed system prevents the introduction of microorganisms from the environment into the urinary tract by eliminating points of entry at the connection between the catheter and drainage tubing. Breaking the closed system — for example, by disconnecting the catheter to irrigate — significantly increases the risk of bacterial contamination and subsequent infection. Performing routine catheter irrigation every 8 hours is not recommended as standard practice; irrigation is only indicated for specific clinical situations such as clot evacuation after urological procedures, not as a CAUTI prevention strategy. Limiting catheter use to 4 days is closer to evidence-based practice in concept, as prompt removal of the catheter once it is no longer needed is strongly recommended; however, there is no fixed 4-day limit in standard guidelines — the recommendation is to use catheters only as long as clinically necessary and to reassess daily. Cleansing the periurethral area with antiseptic solutions is not supported by current evidence and is actually discouraged; routine cleansing with soap and water is sufficient, and antiseptics can cause irritation without reducing infection rates. Therefore, maintaining a closed system is the single most important and evidence-supported protocol element.