Catheters are essential for supporting health, comfort, and dignity in individuals experiencing urinary retention, limited mobility, or neurological conditions. For carers, having a clear understanding of how catheters function and how to manage them properly is key to minimising risks and maintaining a good quality of life for those in their care.
Indwelling (Foley) Catheters
These catheters stay in the bladder to provide continuous drainage. A small balloon keeps them securely in place. They are generally used for longer periods but need regular monitoring to reduce the risk of infection.
Intermittent (In-and-Out) Catheters
These are inserted multiple times a day to empty the bladder and then removed straight after. They offer more independence and carry a lower infection risk compared to long-term indwelling catheters. They are commonly used by individuals with spinal cord injuries or certain neurological conditions.
External (Condom or Sheath) Catheters
Fitted over the penis like a condom, these devices collect urine into a drainage bag. They are non-invasive and help minimise infection risk, but are only suitable for some male patients.
Suprapubic Catheters
These are placed directly into the bladder through a small incision in the lower abdomen. They are typically used for long-term management when urethral catheterisation is not appropriate, and can be easier for some patients and caregivers to clean and manage.
Understanding Common Catheter Problems and Their Causes
Blockages and Poor Urine Flow
If urine is not draining into the collection bag, check for simple issues first. Ensure the bag is positioned below bladder level so gravity can assist drainage. Examine the tubing for any kinks, twists, or obstructions and straighten them if needed. Low urine output may also be linked to reduced fluid intake. However, if the bladder feels full, the person is uncomfortable, or no urine has passed for several hours, seek urgent medical attention, as a blockage can quickly lead to complications.
Leakage Around the Catheter
Urine leaking around the catheter, known as bypassing, can occur when there is a blockage, bladder spasms, or an incorrectly sized catheter. Start by checking the tubing for bends or restrictions. If the problem continues, contact a healthcare professional rather than attempting to replace the catheter yourself, as ongoing leakage can increase the risk of skin irritation and infection.
Pain, Discomfort, or Bladder Spasms
Discomfort or pain may result from the catheter pulling, being poorly secured, or causing irritation. Make sure it is properly supported with a leg strap or securement device, allowing enough slack for natural movement. Avoid fastening straps too tightly. Persistent or worsening discomfort, especially during movement or urination, should be assessed by a healthcare provider.
Redness, Swelling, or Infection at the Insertion Site
Signs such as redness, swelling, pain, or warmth around the catheter site may indicate infection. Good hygiene practices—such as washing hands before and after handling the catheter and cleaning the area daily—are essential. If these symptoms appear, seek medical advice promptly to prevent further complications.
Cloudy, Foul-Smelling, or Bloody Urine
Changes in urine appearance or smell, including cloudiness, a strong odour, or the presence of blood, can signal infection. These symptoms may also be accompanied by fever, chills, or discomfort and indicate a Catheter Associated Urinary Tract Infections (CAUTI). In older individuals, confusion or sudden behavioural changes can also be a warning sign. Medical attention should be sought as soon as these symptoms are noticed.
Accidental Removal or Displacement
If the catheter is accidentally pulled out or appears to have moved out of position, do not attempt to reinsert it unless you are trained. Seek immediate medical assistance, as improper placement or delayed care can lead to injury or infection.
Identifying Early Signs of Catheter Issues
Recognising early warning signs of catheter-related problems is important for preventing more serious complications. Changes in urine flow are often one of the first indicators—this may include little to no urine draining, or urine leaking around the catheter instead of flowing into the bag.
Physical symptoms should also be closely monitored. Pain, discomfort, or a pulling sensation around the catheter site can suggest irritation, poor positioning, or bladder spasms. Redness, swelling, or tenderness where the catheter enters the body may indicate the beginning of an infection.
Changes in urine can also signal a problem. Cloudy urine, a strong or unpleasant odour, or the presence of blood are all potential warning signs. These may be accompanied by general symptoms such as fever, chills, or a feeling of being unwell. In older adults, confusion or sudden changes in behaviour can also be an early sign of infection.
Additionally, be alert to any signs that the catheter has moved, become dislodged, or is not functioning as expected. Acting quickly when these early symptoms appear can help reduce the risk of infection, discomfort, and more serious complications.
Essential Care Tips to Avoid Catheter Problems
Proper catheter care is key to preventing complications such as blockages, infections, discomfort, and leakage — especially for individuals with post-surgical needs, neurological conditions, or weakened bladder function. The following best practices help maintain safety, comfort, and effective drainage.
Hygiene and Handling
Maintaining good hygiene is one of the most important ways to prevent infection and complications. Always wash your hands before and after touching the catheter or drainage system. Clean the area where the catheter enters the body daily using mild soap and water, and avoid using powders, creams, or scented products that may cause irritation.
Handling should be kept to a minimum to reduce the risk of introducing bacteria. Avoid disconnecting the system unnecessarily, as each break in the closed system increases infection risk.
Drainage Bag Management
Correct management of the drainage bag helps prevent blockages and backflow. Always keep the bag positioned below bladder level to allow proper urine flow and avoid complications.
Empty the bag regularly — typically every few hours or when it becomes around three-quarters full — to prevent pressure and pulling on the catheter. Ensure tubing is free from kinks or twists and clean or replace the bag as recommended to reduce the risk of infection, odour and blockage.
Regular Observation and Documentation
Consistent monitoring helps detect early signs of problems. Check that urine is flowing freely, observe any changes in colour, clarity, or smell, and look for signs of leakage or discomfort.
Recording urine output, fluid intake, and any unusual symptoms can be especially helpful for individuals with neurological conditions or post-surgical care needs. Early detection allows for prompt intervention and reduces the risk of more serious complications.
Hydration and Diet
Adequate hydration plays a major role in preventing catheter blockages and urinary tract infections. Encourage regular fluid intake (unless otherwise advised), as this helps flush the bladder and reduces the buildup of sediment or bacteria.
A balanced diet that includes sufficient fibre can also help prevent constipation, which may place pressure on the bladder and interfere with proper drainage.
When to Seek Medical Help
While carers can handle most routine catheter care, recognising when professional help is needed is essential. Urgent medical attention should be sought if there is no urine output for several hours despite a full bladder, as this may indicate a blockage. Ongoing leakage around the catheter or more than minor traces of blood in the urine should also be assessed. Signs of infection to watch for include fever, chills, cloudy or strong-smelling urine, and sudden confusion — particularly in older individuals.
Pain should never be ignored. Severe or increasing discomfort around the insertion site, or if the catheter has been pulled out or moved out of place, requires prompt attention. Do not attempt to correct the issue unless properly trained. Instead, contact a healthcare professional immediately. Being aware of these warning signs and responding quickly helps prevent complications and protects the wellbeing of the person in your care.
Final Thoughts
Catheters are a valuable medical device, but they need to be chosen and managed with care. For both carers and care recipients, understanding the different types, potential risks, and lifestyle impacts is essential for making informed decisions. Always consult a healthcare professional to ensure the safest and most suitable option.
Sources
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HealthyWA – General hygiene tips for your catheter
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Eastern Health – A Guide to Help You Manage Your Catheter and Drainage Bags
https://www.easternhealth.org.au/images/services/translations/catheter_english.pdf -
South Eastern Sydney Local Health District (SESLHD) – Caring for your Indwelling Catheter at Home (Feb 2025)
https://www.seslhd.health.nsw.gov.au/sites/default/files/groups/St_George_Hospital/SGH_Documents/Caring_for_your_indwelling_catheter_at_home_brochure_2025_Feb.pdf -
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https://www.vitalitymedical.com/blog/how-to-prevent-common-issues-with-catheter-drainage-bags.html -
Mercy Health – Urinary Catheter Care at Home
https://health-services.mercyhealth.com.au/wp-content/uploads/sites/31/downloads/PATIENT-INFORMATION-MHW-Urinary-catheter-care-at-home.pdf