How to Irrigate a Foley Catheter, and When Not To

How to Irrigate a Foley Catheter, and When Not To

A Foley catheter is a thin tube inserted through the urethra into the bladder to drain urine. Over time, debris, blood clots or encrustations can block the catheter, causing urine to back up. Irrigation (flushing) helps restore flow—but it must be done correctly and only when indicated.

Why and When to Irrigate
• Restore urine flow if you notice decreased or no drainage for 30 minutes and the drainage bag isn’t full.
• Clear small blood clots after surgery or mild hematuria (pink-tinged urine).
• Prevent encrustation in long-term catheter users.

When Not To Irrigate
• Signs of urinary tract infection (UTI)—fever, chills, burning, foul-smelling urine—unless directed by a provider.
• Active, heavy bleeding or large blood clots in the urine.
• Recent bladder surgery or trauma.
• Severe bladder spasms or pain on irrigation.
• If your healthcare provider has specifically advised against it.

Gather Your Supplies
• Sterile irrigation tray or small basin
• Sterile normal saline (0.9%) or prescribed irrigant, in a 30–60 mL syringe
• Sterile gloves
• Antiseptic wipes (e.g., chlorhexidine or alcohol swabs)
• Gauze pads
• Disposable plastic container for fluid collection
• Protective pad under the patient to catch spills
• Clock or timer

Step-by-Step Irrigation Technique

1. Explain the Procedure
   • Tell the patient why you’re irrigating, what to expect (a little discomfort), and encourage them to ask questions.

2. Hand Hygiene and Gloves
   • Wash your hands thoroughly.
   • Put on sterile gloves.

3. Prepare the Field
   • Place a protective pad under the patient’s buttocks or catheter tubing.
   • Set your sterile tray nearby.
   • Open the saline and draw 30–60 mL into the syringe, keeping everything sterile.

4. Clamp the Catheter Tubing
   • Just below the irrigation port, gently clamp the drainage tubing to prevent backflow.

5. Clean the Irrigation Port
   • Use an antiseptic wipe to clean the catheter’s injection port.
   • Allow it to air-dry (about 10 seconds).

6. Connect the Syringe
   • Attach the syringe tip to the irrigation port without touching any non-sterile surfaces.

7. Inject the Solution Slowly
   • Ask the patient to relax and breathe deeply.
   • Push the plunger gradually, instilling 10–30 mL at a time.
   • Stop if the patient has significant discomfort or bladder spasms.

8. Allow Fluid to Return
   • Unclamp the drainage tubing so fluid and debris can flow into your collection container.
   • Clamp again if further irrigation is needed.

9. Repeat as Ordered
   • You may need to repeat steps 6–8 up to three times or per provider’s instructions.
   • Do not exceed the total volume ordered (often 100 mL maximum in one session).

10. Finish Up
    • Unclamp the tubing fully to restore normal drainage.
    • Disconnect the syringe and dispose of it in a sharps container.
    • Clean the port again with antiseptic and recap it if needed.
    • Remove gloves and wash your hands.

11. Document
    • Record the volume of irrigant used and the volume and appearance of return fluid.
    • Note any patient complaints (pain, spasms) and your interventions.

What to Watch For
• Successful irrigation returns clear or mildly pink fluid.
• Persistent blockage or dark-red urine may indicate a large clot—stop irrigation and notify a provider.
• New or worsening pain and spasms can signal bladder irritation—stop and reassess.
• Fever or foul odor after irrigation may point to infection; obtain a urine culture per protocol.

Potential Complications
• Bladder spasms or increased pain
• Urethral trauma or bleeding from forceful irrigation
• Introduction of bacteria leading to UTI
• Overdistension of the bladder if drainage tubing remains clamped too long

When to Seek Further Help
• No urine return after irrigation and you’re sure the catheter isn’t kinked.
• Heavy bleeding or passage of large clots.
• High fever, shaking chills or severe abdominal pain.
• Signs of catheter damage or dislodgement.

Free, Online Symptom Check
If you’re unsure whether your symptoms are urgent, consider doing a free, online symptom check, using the doctor approved Ubie Symptom Checker. It can help you decide if you need to seek medical attention right away. Start the Ubie Symptom Checker

Key Takeaways
• Only irrigate under a provider’s order or clear indication of blockage.
• Always use sterile technique to minimize infection risk.
• Go slowly—forceful or excessive irrigation can harm the bladder or urethra.
• Stop immediately if the patient experiences significant pain, spasms or no return.
• Document thoroughly and report any concerns.

Remember, catheter care varies by patient and setting. Always follow your facility’s protocol and your healthcare provider’s orders. If you suspect a life-threatening complication or the patient’s condition worsens, speak to a doctor right away.