What is a stoma blockage?
What is a stoma blockage to begin with? A stoma blockage, also called bowel obstruction, means that stool cannot pass through, or can only pass through partially. There are two main types of blockages:
Partial blockage
With a partial blockage, a small amount of liquid can still pass through the obstruction. This often results in liquid, mucus-like, and foul-smelling output from the stoma.
Complete blockage
With a complete blockage, no output comes from the stoma; so there's no liquid, air, or stool. This is rarer but asks for immediate medical assessment.
Most stoma blockages are partial blockages and can often be managed at home if you respond quickly.
What causes a stoma blockage?
Now that we know what a stoma blockage is, what causes one? There are several reasons as to why a blockage may happen:
Stoma blockage with colostomy and ileostomy
The reasons of a stoma blockage with a colostomy and ileostomy may include:
- High-fibre or difficult-to-digest foods (e.g., celery, asparagus, nuts, corn): If these foods aren't chewed thoroughly, they can narrow or block the bowel
- Scarring or adhesions in the abdominal cavity
- Strictures (narrowing) at the stoma or in the bowel
- Insufficiently chewed food
- Dehydration: Too little fluid means bowel contents become firmer and harder to move. This is particularly important for people with an ileostomy, where adequate fluid intake is essential
- Hernias (ruptures) near the stoma
Blockage with urostomy
- Mucus production, which can block the stoma opening
- Strictures (narrowing) at the stoma
- Adhesions in the area of the stoma or urinary tract
- Dehydration
Many people are more sensitive to certain foods or situations. If you come across these problems often, you may find it useful to keep a food diary. Many people also find that stress and travelling can worsen their symptoms.
Symptoms of a stoma blockage
The most important symptom of a stoma blockage
The clearest indication of a stoma blockage is a sudden change in your usual output pattern. Many people first notice that unusually little output enters the pouch, the pouch remains empty longer than usual, or there's very little air present.
Other possible stoma blockage symptoms
- Abdominal pain and cramping: Abdominal pain or cramping often occur. These may come in waves, persist continuously, or be felt around the stoma or throughout the entire abdomen.
- Swelling: Swelling can also happen. The abdomen often looks bloated, and the stoma itself may swell or seem darker.
- Nausea and vomiting: When food and fluid can't pass through the bowel properly, the body often responds with nausea or vomiting.
- Dark urine or reduced urine output: Dark urine or significantly reduced urine output can indicate dehydration.
- Dry mouth: A dry mouth is another typical sign that your body is lacking fluids.
With colostomy: A blockage can develop gradually and last over several days. It may not always be noticed immediately, as there may be no clear symptoms at first. A developing blockage can therefore start without obvious signs. Since individual digestive rhythms vary, you should be alert if there's no bowel movement for three to four days, especially if you're also in pain.
With ileostomy: With an ileostomy, a blockage can develop very suddenly and without prior warning signs. Since an ileostomy normally produces output continuously, it's already a warning sign if the pouch remains empty for several hours.
For urostomy: As for urostomy, additional symptoms of a blocked stoma include:
- Reduced urine output or temporarily absent urine flow
- Pressure or feeling of fullness in the abdomen
- Back or flank pain
- Fever, chills, or general feeling of illness
- Changes to the stoma, e.g., swelling or no urine output
A blocked stoma blockage at a urostomy can have serious consequences and should be recognised early. Since urine normally flows continuously through the urostomy, changes in urine flow are the most important warning sign.
How to prevent a stoma blockage
Chew food thoroughly
Chewing food thoroughly is the single most important preventative measure. Chew each mouthful slowly and thoroughly (ideally 20 to 30 times) until the food is almost mushy. Take your time with meals and avoid eating in a rush.
Drink enough fluids
Drink approximately 2 to 3 litres of fluid daily, unless medically advised otherwise. In addition to water and warm tea, drink fresh fruit juices. Sometimes carbonated drinks can also help. Good fluid intake keeps bowel contents soft and supports digestion.
Be cautious with high-fibre foods
Introduce high-fibre foods slowly and gradually into your diet, and pay attention to how your body responds.
Be extra careful with:
- Raw vegetables
- Skins and husks
- Nuts
- Seeds
- Popcorn
Identify your personal triggers and keep records
Pay attention to which foods or situations cause problems for you. Over time, many people learn their personal "triggers" and can avoid blockages accordingly. This is why a food diary helps identify what works for your individual digestive system.
Gentle massage
Gently massage the area around your stoma to stimulate bowel activity and help relieve any potential blockage.
Heat
A warm bath or heating pad can also help relax your abdominal muscles and ease discomfort.
Stay active
Keep moving as much as possible, as this supports digestion. A simple exercise is to lie on your back, pull your knees towards your chest, and gently rock from side to side.
Check your stoma opening
If your stoma is more swollen than usual, check whether the opening of your appliance may need to be cut slightly larger.
Note for colostomy: Your GP may prescribe laxatives for a colostomy. Make sure you drink enough fluid to support their effectiveness.
Respond early
If output suddenly decreases or changes, take action immediately:
- Drink more fluids
- Choose easily digestible foods
- Increase movement
Early action often prevents a complete blockage.
How to manage a blocked stoma
I've no output for several days. Is this dangerous?
It depends on your stoma type.
For an ileostomy: If there's no output for several days, this is abnormal and requires urgent medical assessment. An ileostomy normally produces output several times daily.
For a colostomy: Slower digestion can mean constipation. However, if you also experience symptoms such as:
- Cramping
- Nausea
- Swelling
- General malaise
you should also seek medical advice.
How long can a stoma blockage last?
Partial blockages usually go away within 24 to 48 hours with appropriate home measures. A complete blockage, however, usually doesn't improve without medical help.
The longer symptoms persist, the higher the risk of:
- Severe dehydration
- Bowel damage
- Emergency surgery
When does a blocked stoma become dangerous?
A blockage becomes serious if:
- No output occurs for many hours
- Severe vomiting develops
- You cannot keep fluids down
- Severe pain is present
- Fever develops
- The stoma is severely reddened or changed
- Clear signs of dehydration are present, including:
- Extreme fatigue
- Dizziness
- Confusion
- Very dark urine
- Intense thirst
Important: If a urostomy is blocked and no urine is flowing, this is a medical emergency. Urine can back up into the kidneys and cause permanent damage.
When to seek medical help immediately
Contact your GP or emergency medical services immediately if:
- No output occurs for many hours
- Severe or worsening pain develops
- You are vomiting
- Clear signs of dehydration are present
- You develop a fever
- Symptoms worsen despite your efforts
Key takeaways on stoma blockages
Stoma blockages can be worrying, but they don't have to be. If you know the possible causes, take warning signs seriously, and understand how to respond correctly, you're well prepared. With a bit of mindfulness in your daily life, you can prevent many blockages or recognise and treat them early.
If you're unsure or experience repeated problems, contact your healthcare team. Together, you can find individual solutions that work well with your lifestyle.
FAQ: Stoma blockage
Can I eat normally again after a stoma blockage?
Yes! However, start slowly with easily digestible foods such as:
- Mashed potato
- Cooked vegetables
- Scrambled eggs
- Soft foods
In the beginning, avoid foods that may have triggered the blockage.
Can stress or anxiety cause a blockage?
Stress alone usually doesn't cause a blockage, but it can worsen digestive problems. Many people eat faster when stressed, drink less, or tolerate certain foods less well.
How often do stoma blockages occur?
Many people with an ostomy experience at least one blockage. How frequently this happens depends on factors including:
- The type of stoma
- Your diet
- How much you drink
- Individual anatomical factors
Can I travel if I get blockages frequently?
Yes, with good planning. Key points include:
- Adequate fluid intake
- Foods you know work well for you
- Extra stoma supplies
- Information about medical contacts at your destination
With some planning, travel is absolutely possible with an ostomy.