What is a Foley catheter (urethral catheter) used for?

A Foley catheter is a tube inserted through the urethra into the bladder to drain urine. It is used when a patient is unable to urinate on their own, or when urine output needs to be closely monitored in critically ill patients. It is only placed when there is a clear medical indication.

Is Foley catheter insertion painful?

There is some discomfort involved, but it can be significantly reduced. Before insertion, the urologist applies a lubricating gel with a local anesthetic to the urethra. Studies confirm that this pre-lubrication method significantly reduces urethral discomfort during the procedure.

How long does a Foley catheter stay in?

The catheter is removed as soon as the medical indication is resolved, allowing the patient to urinate normally again. If ongoing catheterization is required, the catheter system has a lifespan of 1 month and must be changed after that period.

Can a Foley catheter cause a urinary tract infection?

Yes. Catheter-induced urinary tract infection is the most commonly asked-about complication. The bladder is normally a sterile environment, and inserting any foreign device reduces sterility. However, the risk is manageable with good hygiene practices. When a catheter is medically necessary, the benefits outweigh this risk.

What other complications can a Foley catheter cause?

Possible complications include urethral injury, which can occur if the procedure is not performed by a skilled specialist, and catheter-associated urinary tract infection. Both risks are minimized when the procedure is performed by an experienced urologist with proper technique and hygiene.

How do I care for a Foley catheter at home?

Key home care steps include washing hands immediately before and after handling the catheter, wearing clean gloves when handling the drainage system, cleaning the catheter with soap, gentle cleaning agents, or water, keeping the tubing free from kinks or blockages, and always keeping the drainage system closed — replacing it with a new one if it becomes disconnected.

Urethral Catheter: Purpose, Care & FAQs

Last updated: May 18, 2026

Soarawee Weerasopone, Urologist

Bangkok hospital Headquarter, Bangkok

Samitivej Sriracha hospital, Chonburi

LINE Contact

Undoubtedly, that I, urologist, was getting used to this thing a “Foley catheterization procedure”. But in the contrary, patients instead that seems to be naive for this thing here; a urethral catheterization system always terrified them while putting this thing into their urethra. This topic will show on the general frequent asked questions which I always need to educate them before doing the procedure.

Urethral catheter is a common urologic procedure but from the patient’s side, absolutely not.

Q&A on Foley catheterization procedure

Q: Why do I need to be retaining the foley catheter?

A: There should be a medical indicator; for example, inability to void by yourself or to be monitoring urine in critical ill patients.

Q: Is it painful?

A: Pre-lubrication with anesthetic jelly significantly reduces urethral discomfort during the procedure. Evidence confirms this method reduces pain meaningfully.

Urine bag is common seen in hospitalized patient.

Q: How long will it take to be removed?

A: If no medical indicator requirement for foley catheterization, the catheter will be removed quickly and will let you urinate by yourself again.

Q: Will the catheter possibly causing any complication?

Urethral injury – if not handled by a specialist or skillful practitioner.
Catheter-induced urinary tract infection – maintaining good hygiene significantly reduces this risk.

Q: What is the lifespan of a urethral catheter system?

A: The urethral catheter system has 1 month long lasting to use and needs to be changed if the medical indicator still requires it.

Q: How do we take care of the urethral catheter at home?

Always do hand hygiene before and after handling the catheter.
Clean with soap, gentle cleaning agents or water.
Keep the catheter away from kinking and obstruction.
Always keep the drainage system closed.

Catheter-related urinary tract infection is always our concern.

If you have any questions, please discuss with your trusted urologist. See you in next article!

You can text me here.

Frequently Asked Questions

Q1: What is a urethral (Foley) catheter used for?

A urethral catheter is a flexible tube inserted into the bladder through the urethra to drain urine. It is used when a patient cannot urinate independently due to urinary retention, after certain surgical procedures, or when precise urine output monitoring is required in critically ill patients. It is a routine urological procedure performed by trained medical professionals.

Q2: Is urethral catheterization painful?

While catheterization can cause some discomfort, a skilled urologist minimizes pain by applying anesthetic lubricating jelly inside the urethra before inserting the catheter. Clinical evidence confirms that this pre-lubrication technique significantly reduces urethral discomfort during the procedure. Most patients tolerate the procedure well with proper preparation and technique.

Q3: Can a urethral catheter cause a urinary tract infection?

Yes, catheter-associated urinary tract infection (CAUTI) is a recognized risk. However, maintaining strict hygiene, keeping the drainage system closed, and removing the catheter as soon as it is no longer medically necessary significantly reduces this risk. When catheterization is medically indicated, its benefits consistently outweigh the risks.

Q4: How long can a urethral catheter stay in place?

A standard urethral catheter can remain in place for up to one month before it needs to be changed. If the medical indication continues beyond one month, the catheter should be replaced with a new one. Your urologist will assess your condition regularly and remove the catheter as soon as it is no longer required.

Q5: How do I care for a urethral catheter at home?

Always wash your hands before and after handling the catheter, and wear clean gloves when managing the drainage bag. Clean the catheter and surrounding area with soap and water daily. Prevent the catheter tube from kinking, always keep the drainage bag below bladder level, and maintain a closed drainage system. Contact your urologist immediately if you notice fever, cloudy urine, or increased pain.

If you have concerns about urethral catheterization or urinary retention, Dr. Soarawee Weerasopone offers specialist consultations at Bangkok Hospital Headquarters. Book a Consultation.

Disclaimer: This content is written and reviewed by Dr. Soarawee Weerasopone, a board-certified urologist at Bangkok Hospital Headquarters. It is intended for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before starting any medical treatment.

Medically written & reviewed by: Dr. Soarawee Weerasopone (Dr. Pom) — Board-Certified Urologist, Bangkok Hospital Headquarters. International Fellow: Baylor College of Medicine (USA) · Juntendo University (Japan) · Chang Gung Memorial Hospital (Taiwan).

Dr. Soarawee Weerasopone

Dr. Soarawee Weerasopone (Dr. Pom) is a board-certified urologist at Bangkok Hospital Headquarters, specializing in Men’s Health, Robotic Surgery (Da Vinci System), and Kidney Stone treatment. He has completed international fellowships at Baylor College of Medicine (USA), Juntendo University Hospital (Japan), and Chang Gung Memorial Hospital (Taiwan). All medical content on this site is written and reviewed by Dr. Soarawee based on his clinical experience and international training.