Colostomy Care: Procedure, Equipment, Complications and Patient Education

Colostomy care is the nursing care provided to a patient with a colostomy to keep the stoma and surrounding skin healthy, maintain a secure pouch, monitor bowel output, and identify complications early. It involves assessing the stoma, removing and replacing the pouch, cleaning and protecting the surrounding skin, and teaching the patient how to manage the colostomy.

For nursing students, colostomy care is more than simply changing a bag. During the procedure, the nurse also assesses the stoma’s appearance, checks the condition of the surrounding skin, observes bowel output, maintains the patient’s dignity, and identifies changes that may require further clinical attention.

This guide explains the colostomy care procedure step by step, including required equipment, stoma assessment, complications, patient education, documentation, and key OSCE points.

What Is a Colostomy?

A colostomy is a surgically created opening through which a portion of the colon is brought through the abdominal wall so that faeces can leave the body through the abdomen.

The exposed end of the colon forms the stoma. Since stool is diverted from its usual route, a colostomy pouch is attached around the stoma to collect the faecal output.

Nursing students need to distinguish between these terms:

Colostomy – the surgical creation of an opening from the colon through the abdominal wall.
Stoma – the visible portion of the bowel brought through the abdominal wall.
Colostomy pouch or bag – the appliance attached around the stoma to collect stool.

Therefore, colostomy care is not simply washing the stoma. It involves caring for the stoma and surrounding skin, managing the pouch, observing bowel output, and helping the patient develop the skills needed for independent care.

Why Is a Colostomy Performed?

A colostomy may be temporary or permanent, depending on the patient’s condition and the reason for surgery. It is generally created when faeces need to be diverted from part of the bowel, or when normal stool passage is not possible or should be temporarily avoided.

1. Colorectal cancer

Surgery for colorectal cancer may require removal of part of the bowel. Depending on the location of the tumour, the amount of bowel removed and whether the remaining bowel can safely be reconnected, the patient may require a temporary or permanent colostomy.

2. Bowel or colonic injury

Severe injury to the colon may require faecal diversion, particularly when the injured or repaired bowel needs time to heal.

3. Intestinal or bowel obstruction

A bowel obstruction prevents the normal movement of intestinal contents. Depending on its cause and severity, surgery may be required, and a colostomy may be created to divert bowel contents.

4. Complicated diverticular disease

Severe or complicated diverticular disease may require bowel surgery. In some cases, a colostomy may be created as part of the treatment.

5. Congenital abnormalities

Some children are born with abnormalities affecting the bowel or anus. A temporary colostomy may be created to allow faeces to leave the body safely while corrective treatment is planned or performed.

6. Protection of a healing bowel

After some colorectal operations, the bowel may need time to heal. A temporary colostomy can divert stool away from the operated section rather than allowing faeces to pass directly through it.

The decision to create a colostomy depends on the patient’s condition, the type and location of bowel disease, the surgical procedure and the surgeon’s assessment.

Colostomy Care at a Glance

What the nurse does	Why it matters
Assess the stoma	Helps identify abnormal colour, swelling or other changes
Inspect the surrounding skin	Detects irritation, excoriation and infection
Remove the pouch gently	Reduces unnecessary trauma to the skin
Clean and dry the area	Supports skin health and pouch adhesion
Measure the stoma	Helps achieve an appropriate pouch fit
Apply the pouch correctly	Reduces leakage
Observe bowel output	Helps identify changes in bowel function
Teach the patient	Promotes confidence and independence
Document findings	Supports continuity of care

Why Is Colostomy Care Important?

A colostomy may work well for years, but problems can develop when the pouch does not fit correctly, the surrounding skin becomes damaged, or changes in the stoma are overlooked.

Protects the surrounding skin

Faecal output can irritate the skin around the stoma. Gentle cleaning, thorough drying, appropriate skin protection and a well-fitting pouch help reduce redness, soreness and skin breakdown.

Prevents leakage

A properly fitted pouch forms a secure seal around the stoma. This reduces leakage and helps prevent stool from repeatedly contacting the surrounding skin.

Promotes comfort

Good stoma care can reduce itching, burning, soreness and discomfort. It also allows the nurse to identify problems before they become more serious.

Helps detect complications early

Pouch changes provide an opportunity to observe the stoma and surrounding skin. Changes in colour, swelling, bleeding or bowel output may indicate a problem requiring further assessment.

Supports psychological adjustment

A new stoma can affect body image and confidence. Some patients worry about leakage, odour or other people noticing the pouch. Supportive communication and practical teaching can make the adjustment easier.

Encourages independence

The long-term goal is for the patient to remain as independent as possible. As the patient’s condition allows, the nurse should gradually encourage participation in pouch emptying, cleaning, measuring and changing the appliance.

Equipment Required for Colostomy Care

Routine colostomy pouch care is generally performed using clean technique rather than sterile technique, unless a particular clinical situation or local policy requires otherwise.

Prepare the equipment before starting so that the procedure can be performed smoothly without unnecessary interruption.

Top Shelf

Soap in a soap dish, where required by the procedure
Bowl of warm water
Disposable gloves
Clean gauze or swabs in a galipot
Appropriate skin barrier product, if indicated
Stoma measuring guide or tape measure.
Clean scissors, if required for a cut-to-fit pouch
Appropriate cleansing material according to local practice
Clean colostomy pouch in its packaging

Bottom Shelf

Protective apron
Mackintosh
Towel
Large receiver or appropriate waste receptacle
Measuring container, where required

At the Bedside

Hand-washing facilities
Screen for privacy
Additional waste-disposal equipment as required

The exact equipment may vary depending on the pouching system used, the patient’s condition and the policy of the healthcare facility.

Preparation Before Colostomy Care

Good preparation prevents unnecessary interruptions and helps maintain the patient’s privacy and dignity.

1. Identify the patient and explain the procedure

Explain what you are going to do and why. Give the patient an opportunity to ask questions.

This is particularly important for a patient with a new colostomy who may be anxious about having the pouch removed or seeing the stoma.

2. Provide privacy

Use a screen and expose only the part of the abdomen that needs examination.

3. Prepare the equipment

Arrange the equipment within easy reach before beginning the procedure.

4. Perform hand hygiene

Perform hand hygiene before patient contact and at the appropriate points throughout the procedure.

5. Put on appropriate protective equipment

Wear an apron and gloves as appropriate to protect yourself and your clothing from contamination.

Colostomy Care Procedure

1. Position the patient comfortably

Position the patient comfortably to allow good access to the stoma while maintaining dignity.

A supine or semi-recumbent position may be appropriate, depending on the patient’s condition and the stoma’s location.

2. Protect the bedding

Place a mackintosh and towel beneath the patient to protect the bedding from water or faecal material.

3. Expose the stoma

Turn down the upper bedding only as much as necessary to expose the stoma.

4. Assess the existing pouch

Before removing the pouch, look at its condition.

Observe:

whether there is leakage
whether the pouch is securely attached
the amount of output
the consistency and appearance of the stool
whether there is unusual odour or other concern

This gives the nurse useful information before removing the appliance.

5. Gently remove the used pouch

Remove the pouch carefully while supporting the surrounding skin.

Avoid pulling the appliance away forcefully. Repeated traumatic removal can damage the skin and make future pouch adhesion more difficult.

Dispose of the used appliance and contaminated materials according to local infection-prevention and waste-disposal procedures.

6. Assess the stoma

Assess the stoma every time it is exposed.

Look at its:

colour
size
shape
moisture
swelling
bleeding
protrusion
general appearance

A healthy stoma is generally moist and pink to red.

A markedly pale, dusky, purple, brown or black stoma may indicate compromised blood supply and requires prompt clinical assessment.

Some swelling may occur during the early postoperative period. However, assess for significant, worsening, or persistent changes.

7. Assess the surrounding skin

Inspect the skin around the stoma for:

redness
itching
soreness
burning
rash
excoriation
broken skin
swelling
discharge

Peristomal skin problems may result from leakage, moisture, poor pouch fitting, friction or sensitivity to products.

8. Clean the stoma and surrounding skin

Gently clean away faecal material using the appropriate cleansing method and clean materials.

Avoid vigorous rubbing. The skin around the stoma can become irritated easily, particularly if the pouch is changed frequently.

Follow local clinical guidance and the instructions for the patient’s particular pouching system when selecting cleansing products.

9. Dry the skin thoroughly

Gently pat the surrounding skin dry.

This step is important because excess moisture can interfere with pouch adhesion and contribute to skin problems.

10. Apply a skin barrier when indicated

If a barrier product is required, apply it according to the product instructions and local practice.

This helps protect peristomal skin from moisture and contact with intestinal effluent.

Do not assume that a thick layer of barrier product is always better. Some products can interfere with pouch adhesion if used incorrectly.

11. Measure the stoma

Measure the stoma as needed, especially if its size changes during the postoperative period.

Do not automatically assume that the opening used for the previous pouch is still the correct size.

12. Prepare the pouch opening

Use the measurement to prepare the pouch opening according to the manufacturer’s instructions.

The opening should fit closely around the stoma without constricting it.

An opening that is too large may expose the surrounding skin to faecal output.

An opening that is too small may rub against or place pressure on the stoma.

13. Apply the clean pouch

Apply the pouch to clean, dry skin.

Ensure that:

the stoma is positioned correctly within the opening
the adhesive makes good contact with the skin
there are no obvious gaps
the appliance is secure
the pouch is positioned comfortably

14. Make the patient comfortable

Replace the patient’s clothing and bedding. Ensure that the patient is comfortable and that the pouch is positioned appropriately.

Thank the patient for their cooperation.

15. Clear the equipment

Dispose of contaminated materials appropriately. Clean reusable equipment according to local policy and return the remaining equipment to its proper place.

16. Remove protective equipment and perform hand hygiene

Remove gloves and other protective equipment appropriately and perform hand hygiene.

17. Document the care

Document the procedure and relevant findings according to the healthcare facility’s documentation policy.

How to Assess a Colostomy Stoma

Colostomy care is also an important assessment opportunity. The nurse should not focus only on replacing the pouch.

Assess the stoma

Check:

Colour: normally pink to red
Moisture: normally moist
Size and shape
Swelling
Bleeding
Protrusion
Output

Assess the surrounding skin.

Look for:

redness
rash
irritation
excoriation
broken skin
swelling
pain
discharge

Assess the bowel output.

Observe:

amount
consistency
colour
frequency
unusual changes

Stool consistency can vary depending on where the colostomy is located in the colon. Consider the patient’s usual pattern when deciding whether a change is significant.

What Does a Healthy Stoma Look Like?

A healthy stoma is generally:

pink to red
moist
slightly raised above the skin
producing the expected bowel output

The appearance can vary somewhat between patients, so the nurse should also consider the patient’s previous assessments.

Significant changes in colour matter more than small differences in appearance.

A stoma that becomes markedly pale, dusky, purple, brown or black may indicate impaired blood supply and requires prompt assessment.

Complications of Colostomy

1. Peristomal skin irritation

The skin surrounding the stoma may become red, itchy, sore or excoriated.

A common cause is stool leakage onto the skin. Poor pouch fitting, moisture, friction and frequent traumatic pouch removal can also contribute.

2. Peristomal skin infection

Possible signs include increasing redness, swelling, warmth, pain or discharge. Fever or other systemic symptoms may also occur.

Assess the patient and arrange appropriate treatment based on clinical findings.

3. Stoma prolapse

A prolapsed stoma becomes longer and protrudes farther than usual through the abdominal opening.

An appropriate healthcare professional should assess any new or significant prolapse.

4. Stoma retraction

A retracted stoma sinks below the surrounding skin level.

This may make it difficult to obtain a good pouch seal and can increase the risk of leakage and skin irritation.

5. Stoma necrosis

Necrosis occurs when the blood supply to the stoma is compromised.

The stoma may become unusually dark, dusky, purple, brown or black.

This is a serious finding requiring prompt clinical assessment.

6. Stoma oedema

The stoma may be swollen, particularly soon after surgery. Some early postoperative oedema may be expected.

However, significant, persistent or worsening swelling requires assessment.

7. Constipation

The patient may experience reduced or difficult stool passage, sometimes with hard stool.

Assess the cause rather than assuming every change in output is simple constipation.

8. Diarrhoea

Frequent watery output can result in significant fluid and electrolyte losses.

Monitor the patient for dehydration and other concerning symptoms.

9. Bowel obstruction

Possible features include:

reduced or absent expected output
abdominal pain or cramping
abdominal distension
nausea
vomiting

These symptoms require prompt clinical assessment, especially when several occur together.

10. Parastomal hernia

A parastomal hernia occurs when abdominal contents protrude through the abdominal wall around the stoma.

The patient may notice a swelling around the stoma that becomes more obvious when coughing, standing or straining.

11. Psychological difficulties

Some patients experience anxiety, embarrassment, low self-esteem or social withdrawal after receiving a stoma.

These concerns should be taken seriously. The nurse can reassure patients, encourage questions, and involve appropriate support services when needed.

12. Repeated pouch leakage or detachment

Repeated leakage is not simply a cosmetic problem. It may indicate:

an incorrectly sized pouch opening
poor skin preparation
moisture on the skin
an unsuitable appliance
damaged or uneven skin
excessive output

Identify the cause rather than repeatedly replacing the pouch without addressing the underlying problem.

Patient Education Before Discharge

Before discharge, the patient should have enough knowledge and confidence to participate in their own colostomy care.

Teach the patient how to care for the stoma.

Demonstrate how to:

Remove the old pouch gently.
Clean the stoma and surrounding skin.
Dry the skin properly.
Measure the stoma when necessary.
Prepare the pouch opening correctly.
Apply the new pouch securely.
Empty and dispose of the pouch appropriately.

Where possible, allow the patient to practise under supervision rather than only watching the nurse.

This allows the nurse to identify areas where the patient needs more teaching before going home. Maintain adequate fluid intake

Encourage adequate fluid intake based on the patient’s condition and the healthcare team’s advice.

Fluid requirements vary between patients, so avoid giving a blanket instruction to drink excessive amounts.

Eat a balanced diet

Encourage a balanced diet that supports recovery and general health.

Patients should also learn how different foods affect their own bowel output. Some foods may increase gas, change stool consistency or affect odour.

Food tolerance varies, so patients should observe their own response rather than assuming that many foods must automatically be avoided. Maintain personal hygiene

Keep the stoma and surrounding skin clean and dry.

Good hygiene supports skin health and reduces the risk of irritation and infection. Wear comfortable clothing

Clothing should not place unnecessary pressure or friction on the stoma or pouch.

Patients can usually choose clothing that keeps them comfortable while they continue their normal activities. Remain physically active as recovery allows

Walking and other appropriate activities can support general recovery and physical fitness.

However, avoid strenuous activity and heavy lifting until the patient has recovered sufficiently and received appropriate advice, particularly after abdominal surgery. Maintain social and emotional support.

Encourage the patient not to withdraw unnecessarily from family, friends and normal activities.

Concerns about body image, leakage and odour can affect confidence. Encourage the patient to discuss persistent anxiety, embarrassment or low mood rather than dealing with these concerns alone.

When Should a Patient Seek Medical Help?

The patient should understand which changes require professional assessment.

Seek medical attention for concerning symptoms such as:

a markedly pale, purple, brown or black stoma
significant or persistent bleeding
severe or worsening abdominal pain
persistent vomiting
marked abdominal swelling or distension
a significant reduction or absence of expected output, particularly when accompanied by pain, vomiting or distension
increasing redness, swelling, pain or pus around the stoma
severe or worsening skin breakdown
signs of dehydration
a sudden major change in the appearance of the stoma
persistent pouch leakage that cannot be corrected with normal pouch-care measures

The patient should also attend scheduled follow-up appointments so the stoma, surrounding skin, and overall recovery can be reviewed.

Documentation of Colostomy Care

After completing the procedure, document relevant findings according to local policy.

Documentation may include:

date and time of care
condition and appearance of the stoma
stoma colour and swelling
condition of the surrounding skin
amount and character of stool output
pouch or appliance changed
skin barrier or other products used
patient’s tolerance of the procedure
education provided
problems identified
actions taken
referrals or escalation where required

Good documentation provides a record of the patient’s condition and helps the next healthcare professional recognize changes over time. Colostomy Care OSCE Checklist

If you are preparing for an OSCE, don’t rush into changing the pouch. A good demonstration shows you understand both the procedure and patient safety.

A simple sequence to remember is:

Explain → Privacy → Prepare → Hand hygiene/PPE → Position → Protect bedding → Assess → Remove pouch → Clean → Dry → Protect skin → Measure → Apply pouch → Make comfortable → Clear equipment → Hand hygiene → Document

Common OSCE mistakes

Students commonly lose marks by:

failing to explain the procedure
forgetting privacy
failing to perform hand hygiene
pulling the pouch off forcefully
failing to assess the stoma
failing to inspect the surrounding skin
using an incorrectly sized pouch opening
leaving the skin wet
ignoring abnormal stoma colour
failing to observe bowel output
forgetting patient education
failing to document the procedure
leaving the patient uncomfortable

The examiner is not only looking at whether you can change the pouch. They are also assessing communication, infection prevention, patient dignity, observation, clinical reasoning and documentation.

Key Points to Remember

When performing colostomy care, think beyond the pouch.

Look

Observe the stoma, surrounding skin and bowel output.

Clean

Remove faecal material gently without causing unnecessary trauma.

Protect

Keep the skin dry and use appropriate skin protection when indicated.

Assess

Identify abnormal findings and report them promptly.

Teach

Help the patient develop the skills and confidence needed for independent care.

The technical part of colostomy care matters, but the patient’s privacy, dignity, comfort, emotional adjustment, and ability to manage the stoma at home are equally important.

Frequently Asked Questions

What is colostomy care?

Colostomy care is the nursing care provided to maintain the stoma and surrounding skin, manage the colostomy pouch, monitor bowel output, identify complications and teach the patient self-care.

What does a healthy colostomy stoma look like?

A healthy stoma is generally moist and pink to red. Assess promptly for a significant change to a pale, dusky, purple, brown, or black appearance.

Is colostomy care a sterile procedure?

Routine colostomy pouch care is generally performed using clean technique rather than sterile technique. However, always follow infection-prevention practices and local healthcare-facility guidelines.

Why is the stoma measured before applying a pouch?

Measuring helps ensure that the pouch opening fits appropriately around the stoma. An opening that is too large can expose the surrounding skin to stool, while an opening that is too small can rub against or constrict the stoma.

What are common complications of a colostomy?

Possible complications include peristomal skin irritation, infection, stoma prolapse, retraction, compromised blood supply, parastomal hernia, bowel obstruction, diarrhoea, constipation and repeated pouch leakage.

Can a patient with a colostomy live a normal life?

Many people with a colostomy can return to work, social activities, exercise, and other daily activities after recovery. Adjustment takes time, and appropriate education and support can help the patient feel confident managing the stoma.