An indwelling urinary catheter is a continuous, direct route into the bladder, and every hour it stays in place adds risk. Catheter-associated urinary tract infection is among the most common healthcare-associated infections, and the nursing care around insertion, daily maintenance, and timely removal is what keeps that risk low. None of this requires new technology. It requires consistent, disciplined bedside habits applied within your facility's policy.
Start with the question: does this catheter need to be here?
The single most protective action is removing the catheter as soon as it is no longer needed. Prolonged use is the most important risk factor for CAUTI, so a catheter that has outlived its indication is a problem regardless of how clean your maintenance care is.
Build a daily necessity check into your routine. On every shift, ask whether the patient still meets an appropriate indication: acute urinary retention or obstruction, accurate output measurement in the critically ill, selected perioperative needs, healing of a sacral or perineal wound in an incontinent patient, or comfort at end of life. Incontinence alone is not an indication. If you cannot name a current reason, escalate.
Many facilities use a nurse-driven removal protocol so the catheter can come out promptly without waiting for a separate order each time. Know whether your unit has one and how it is documented. When you remove a catheter, note the time, the patient's tolerance, and a plan for monitoring the next void.
Maintain a closed, flowing, secured system
Once the catheter is in, the goal is an undisturbed closed system. The CDC recommends, following aseptic insertion, to maintain a closed drainage system and to maintain unobstructed urine flow, both Category IB recommendations. Each disconnection is an entry point for organisms, so do not break the seal for convenience.
Three mechanical details carry most of the weight:
- Keep it closed. If a break in aseptic technique, a disconnection, or a leak occurs, replace the catheter and the collecting system as a unit using aseptic technique rather than reconnecting.
- Keep it draining. Maintain unobstructed flow by keeping the catheter and tubing free from kinks and dependent loops. Position the drainage bag below the level of the bladder at all times, and never rest it on the floor.
- Secure it. Properly fix the catheter and drainage tubing to reduce traction on the urethra and accidental dislodgement, which can damage tissue and disrupt the closed system.
Empty the drainage bag regularly using a separate, clean collection container for each patient, and keep the drainage spigot from touching the container to avoid contamination and splashing.
A catheter that is closed, unobstructed, secured, and draining below the bladder is doing most of the prevention work for you.
Hygiene, specimens, and what not to do
Hand hygiene frames every interaction. Perform it before and after manipulating the catheter, before and after perineal care, and immediately before and after accessing the drainage system, emptying the bag, or collecting a sample. Glove use does not replace hand hygiene.
For meatal care, daily routine hygiene is appropriate. Evidence supports washing the area around the urethral opening and the catheter surface daily with water or soap and water, and after each episode of incontinence. This matters most when stool is present. Vigorous antiseptic scrubbing of the meatus is not recommended and can irritate tissue.
Collect specimens without breaking the system. Clean the sampling port with a disinfectant, then aspirate a fresh sample from the needleless port using a sterile syringe or adaptor. Send urine for culture only when the patient has signs or symptoms consistent with CAUTI. A culture drawn from a patient with no symptoms invites treatment of asymptomatic bacteriuria, which guidelines advise against.
Several common practices add no benefit and may add harm. Routine bladder irrigation is not required for a patient with an indwelling catheter and is reserved for specific indications such as anticipated obstruction. Routine antibiotic prophylaxis is not recommended. Catheters should not be changed at arbitrary fixed intervals; change them based on clinical indication, such as obstruction or infection, per your facility's policy.
Assess, document, and escalate
Your assessment is the early-warning system. At least once a shift, evaluate urine color, clarity, volume, and odor, the integrity and security of the system, and the patient's comfort. Be alert for new fever, suprapubic or flank tenderness, costovertebral angle pain, new-onset confusion or functional decline in older adults, hematuria, or sudden malodorous or cloudy urine. Remember that many patients with a catheter cannot report classic dysuria, so subtle changes matter.
Document what supports continuity and safety: the ongoing indication, insertion and removal dates, maintenance and meatal care performed, output, and any symptoms you assessed. Clear documentation is also what lets the next nurse, and the infection-prevention team, see whether the catheter still earns its place.
Escalate promptly when you see signs of infection, when the system is compromised, or when the catheter no longer has an indication. Patient and family education reinforces the work: explain why the catheter is in, why it will come out as soon as possible, how to keep the bag below the bladder, and to report any new discomfort or fever. The catheter that prevents the most infections is the one that is removed on time.