Catheter Care

Foundational Role of Catheter Care in CNA Practice

Catheter care is a critical skill for Certified Nursing Assistants (CNAs), as indwelling urinary catheters are common in long-term care and acute settings. Proper care prevents catheter-associated urinary tract infections (CAUTIs), maintains patient comfort, and ensures patency of the drainage system. On the CNA exam, you will be tested on daily care procedures, infection prevention measures, and recognizing signs of complications.

Essential Terminology for Urinary Catheter Management

• Indwelling urinary catheter (Foley catheter): A flexible tube inserted into the bladder through the urethra and held in place by a small balloon inflated with sterile water. It allows continuous drainage of urine.
• Catheter-associated urinary tract infection (CAUTI): A urinary tract infection that occurs in a patient with an indwelling catheter. It is one of the most common healthcare-associated infections.^[1]
• Closed drainage system: A sterile system that connects the catheter to a drainage bag. The system must remain closed to prevent bacteria from entering the bladder.
• Meatal care: Perineal hygiene performed around the catheter insertion site to reduce the risk of infection.
• Drainage bag: Collects urine. Must be kept below the level of the bladder at all times to prevent backflow of urine.

Standardized Daily Care Protocol and Closed System Maintenance

Daily Care Steps

1. Hand hygiene: Perform hand hygiene before and after touching the catheter, drainage bag, or insertion site.
2. Meatal care: Use a separate clean, damp washcloth (soap and water, or per facility policy) to clean around the catheter insertion site. Clean from the meatus outward in one direction. Avoid pulling or tugging on the catheter.^[2]
3. Secure the catheter: Ensure the catheter is taped or secured to the patient’s thigh (for women) or abdomen (for men) to prevent traction and movement.
4. Check drainage tubing: Ensure the tubing is not kinked, looped below the level of the bladder, or dragging on the floor.
5. Empty the drainage bag: Measure and empty the bag at the end of each shift or when it becomes half full, using a clean graduated container. Record output accurately.
6. Observe urine characteristics: Note color, clarity, odor, and volume. Report any abnormalities (e.g., blood‑tinged, cloudy, foul‑smelling) to the nurse immediately.

Key Points for Maintaining a Closed System

• Never disconnect the catheter from the drainage bag except when absolutely necessary (e.g., changing to a leg bag).
• Keep the drainage bag below the level of the bladder – never place it on the floor, and never raise it above the bladder during transfers.
• Use a separate clean collection container for each patient – never reuse or share containers.

Recognizing Complications: Infection, Obstruction, and Trauma Indicators

• Signs of infection (CAUTI): Fever, chills, new‑onset confusion (especially in older adults), suprapubic pain, foul‑smelling or cloudy urine, or sediment in the urine.^[3]
• Signs of obstruction: No urine output for 6–8 hours, distended bladder, patient discomfort, or urine leaking around the catheter.
• Signs of trauma: Blood in the urine, pain at the insertion site, or visible bleeding around the meatus.

Systematic Monitoring of Catheter Function and Patient Status

• Check that the catheter drains freely and the bag is not overfilled.
• Monitor intake and output (I&O) – record all urine output from the bag. Immediately report output less than 30 mL/hour (if on hourly monitoring) or any absence of output for 8 hours.
• Assess the perineal area for redness, swelling, or discharge. Report any change in skin integrity or signs of irritation.
• Verify that the catheter balloon is intact – you will not deflate or inflate the balloon (that is a nursing skill), but report if you notice the catheter slipping out or any resistance when handling.

Therapeutic Interventions for Catheterized Patients

• Perineal hygiene: Provide perineal care every shift and after each episode of incontinence. Use facility-approved cleanser. Dry thoroughly.
• Positioning: Ensure the patient is repositioned every 2 hours (if immobile) to prevent pressure on the catheter tubing and to promote drainage.
• Fluid intake: Encourage fluids (unless contraindicated) to maintain urine flow and reduce infection risk.
• Leg bag vs. night bag: Change from a night bag to a clean leg bag during the day if the patient is ambulatory. Always maintain sterility of the connection port.
• Patient education: Teach the patient to avoid pulling on the catheter, to keep the bag lower than the bladder, and to report any discomfort or change in urine.

Infection Control and Injury Prevention Strategies

• Infection prevention: Always wash hands thoroughly. Never touch the catheter connector port with ungloved hands. Use sterile supplies per facility policy. The CDC recommends that catheters should be removed as soon as no longer clinically indicated.^[1]
• Trauma prevention: Secure the catheter to prevent pulling. Do not tug or manipulate the catheter during care.
• Obstruction management: If urine stops flowing, check for kinks or a low bag. If the bag is full, empty it. Never attempt to flush or irrigate the catheter – notify the nurse.
• Backflow prevention: Always keep the drainage bag below bladder level. If the bag is accidentally raised, empty it and change the bag if contamination is suspected.
• Falls risk: The drainage bag and tubing can trip patients. Keep tubing secured and out of walkways. Assist patients when ambulating with a leg bag.
• Skin breakdown: Check the area where the catheter is secured for pressure or irritation. Reposition the securement device daily.

Test-Taking Strategies for Catheter Care Scenarios

• Remember the “Golden Rule”: The drainage bag must always be below the bladder. This is the most commonly tested safety principle.
• Hand hygiene is #1: Every procedure begins and ends with hand hygiene – always select this answer on the exam.
• Never disconnect the system: Unless you are changing to a leg bag or the nurse directs you, the system should remain closed. Disconnecting increases infection risk.
• Urine output measurement: Empty the bag using the bottom spout into a graduated container. Never pour urine from the bag into another container without using proper infection control.
• Report, do not fix: As a CNA, you do NOT deflate balloons, remove catheters, or irrigate. Know your scope of practice – those actions belong to the licensed nurse.
• Common exam scenario: “What should the CNA do if the patient with an indwelling catheter has no urine output for 8 hours?” Answer: Check for kinks and ensure the bag is below the bladder, then report the finding to the nurse.
• Mnemonic for daily care: “Clean – Align – Report – Empty” (CARE).

References & Sources

1. Centers for Disease Control and Prevention (CDC). Catheter-Associated Urinary Tract Infections (CAUTI). 2023. https://www.cdc.gov/infection-control/hcp/cauti/index.html
2. Potter, P.A., Perry, A.G., Stockert, P.A., & Hall, A.M. (2021). Fundamentals of Nursing (10th ed.). Elsevier. Chapter 46: Urinary Elimination. https://shop.elsevier.com/books/fundamentals-of-nursing/potter/978-0-323-67772-1
3. Ignatavicius, D.D., Workman, M.L., & Rebar, C.R. (2020). Medical-Surgical Nursing: Concepts for Interprofessional Collaborative Care (10th ed.). Elsevier. Section: Renal and Urologic Care. https://shop.elsevier.com/books/medical-surgical-nursing/ignatavicius/978-0-323-61242-5