Nursing care
Colostomy Care: the nurse's role, start to finish
Written and reviewed by Dana Whitfield, RN, MSN · 5 min read · Updated September 2026
Short answer
Colostomy care nursing means assessing the stoma, protecting the peristomal skin, and managing the appliance safely. A beefy red, moist stoma is healthy; a dusky, pale, or black stoma signals compromised blood flow and needs urgent review. Nurses also prepare the patient before surgery and teach self-care before discharge.
What the procedure achieves
A colostomy diverts faecal output through an opening in the abdominal wall, bypassing a segment of diseased, obstructed, or resected bowel. It may be temporary, giving a distal anastomosis time to heal after conditions such as diverticulitis, trauma, or bowel obstruction, or permanent following resection for rectal or colon cancer.
The nurse's role spans the whole trajectory: preparing the patient psychologically and physically before surgery, protecting the stoma and surrounding skin afterwards, and building the patient's confidence to manage the appliance independently. Colostomy output is typically formed or semi-formed, depending on where along the colon the stoma sits, which shapes how much skin protection and pouching frequency the patient will need long-term.
Pre-procedure nursing responsibilities
Before surgery, the nurse confirms informed consent has been obtained, reviews baseline labs and bowel prep status, and coordinates with the wound, ostomy, and continence nurse (WOCN) for stoma site marking. Site selection avoids skin folds, scars, and the beltline so the patient can see and reach the pouch comfortably.
Psychological preparation matters as much as the physical. Many patients associate a stoma with loss of control or body image change, so the nurse assesses coping and answers questions honestly rather than minimising the adjustment. Baseline vital signs, NPO status per orders, and confirmation of bowel prep completion round out preoperative readiness, along with patient education on what to expect on waking, including where the stoma will be and that initial output may be minimal or absent.
Equipment and positioning
Standard supplies include a clear pouching system for the immediate postoperative period, a skin barrier or wafer cut to the stoma's exact diameter, stoma paste or rings to fill uneven skin contours, and a measuring guide, since stoma size shrinks over the first six to eight weeks as swelling resolves.
A clear pouch in the early postoperative days lets the nurse visualise the stoma without removing the appliance, which matters directly for assessment. The patient is typically positioned supine or with the head of the bed elevated slightly for pouch changes, giving the nurse a flat, visible working surface. Good lighting and a warm room help prevent the peristomal skin from cooling and tensing, which makes an accurate seal harder to achieve.
Complications and early signs
Stoma colour is the single most important assessment finding, and it must be checked and documented every shift in the early postoperative period. A healthy stoma is beefy red and moist, similar in colour to the inside of the cheek. A stoma that turns dusky, pale, purple, or black signals compromised blood supply, and a black or necrotic stoma is a surgical emergency requiring immediate notification of the surgical team.
Other complications to watch for include peristomal skin breakdown from leaking effluent, stomal retraction below skin level, prolapse where the bowel protrudes excessively, and parastomal hernia. Excessive bleeding at the stoma edge during cleaning is common and usually minor, but bleeding from within the stoma itself or a stoma that fails to produce output alongside abdominal distension warrants prompt reporting, as it can indicate obstruction.
Post-procedure care
The nurse empties the pouch when it is one-third to one-half full to prevent the weight of the contents from pulling the seal away from the skin. Pouch changes follow a routine: gently remove the old wafer, cleanse the peristomal skin with warm water only, avoiding soap residue or alcohol-based products that can irritate the skin, and dry thoroughly before applying the new barrier.
Measuring and documenting stoma size at each change is essential in the first weeks, since the stoma will shrink as postoperative oedema resolves, and a wafer cut too large exposes skin to stool. The nurse also monitors fluid and electrolyte balance, particularly with an ileostomy or a high-output colostomy, and assesses the abdominal incision separately from the stoma site for signs of infection.
What to teach before discharge
Discharge teaching centres on independence: the patient should be able to empty and change the pouch, recognise a properly sealed appliance, and identify normal versus abnormal stoma appearance before leaving hospital. Reinforcing the colour distinction directly, beefy red is healthy, dusky or black needs urgent care, gives the patient a clear, memorable rule to act on at home.
Teach dietary reintroduction gradually, with attention to foods that can cause blockage in a narrowed stoma, such as popcorn, nuts, or tough fibrous vegetables, and the importance of chewing thoroughly. Cover signs requiring a call to the provider: persistent bleeding, foul odour with fever, stoma colour change, or no output for more than a few hours alongside cramping. Connect the patient with ostomy supply resources and support groups, since long-term adjustment continues well past discharge.
The next step on this is the same as on everything else here: answer questions and read the rationales. Our gastrointestinal practice questions are the closest set to what this page covers.
Common questions
What colour should a healthy stoma be?
A healthy stoma is beefy red and moist, similar to the inside of the cheek. Pale, dusky, purple, or black colouring indicates reduced blood flow and should be reported immediately, since a black or necrotic stoma is a surgical emergency.
How often should a colostomy pouch be emptied?
Empty the pouch when it is about one-third to one-half full. Waiting longer adds weight that can break the skin barrier seal and cause leakage onto the peristomal skin.
Why does the stoma size change after surgery?
Postoperative swelling is highest in the first days after surgery and gradually resolves over roughly six to eight weeks. The nurse remeasures the stoma at each pouch change during this period so the wafer opening stays correctly fitted and does not expose skin to stool.
What foods should a new colostomy patient avoid?
Foods that are tough, fibrous, or poorly chewed, such as popcorn, nuts, corn, and raw celery, can cause a blockage in a stoma that is still narrow after surgery. Patients are taught to reintroduce these foods slowly and chew thoroughly once healing is established.
When should a patient call the provider after discharge?
Call for persistent bleeding, a stoma that changes colour, foul-smelling output with fever, or no stoma output for several hours accompanied by cramping or distension. These can indicate infection, ischaemia, or obstruction and need prompt evaluation.