A Guide to Changing an Ostomy Appliance

Ostomy surgery is difficult to contemplate, but it improves the lives of many people with inflammatory bowel disease (IBD) and other conditions, and in fact, saves lives as well. An ileostomy or a colostomy requires special care after surgery.

Plastic medical colostomy bag lies in a gray paper box
Анатолий Тушенцов / Getty Images

There are many types of ostomy products on the market today, and every person with an ostomy will probably use a different combination to get the right fit and to protect against leaks. However, there are a few commonalities, and the basic instructions on how to change an ostomy appliance—like an ostomy bag—will apply to most situations.

Check with your enterostomal therapy (ET) nurse about any specific questions you have on changing your appliance, or for some tips and tricks.

How to Change an Ostomy Appliance

Here are the supplies and steps involved with changing an ostomy bag:

  • Adhesive remover
  • Skin protector
  • Wafer
  • Pencil
  • Measuring guide
  • Stomahesive paste
  • Plastic bags
  • Washcloth and towel
  • New pouch
  • Scissors


  1. Choose a time when your stoma is not active, such as first thing in the morning.
  2. Wash your hands.
  3. Empty your ostomy pouch as normal. 
  4. Wipe the tape surrounding the old wafer with the adhesive remover. Hold your skin with one hand, and gently pull wafer off with the other. Use adhesive remover as needed.
  5. Put the old pouch, wafer, and other waste (not the clip) into a plastic bag for disposal. Sealable sandwich bags work well.
  6. Clean the skin and stoma with a washcloth and warm water. This is best done in the shower, but don't use scented soaps, as they will leave a film. While in the shower, any waste coming out of the stoma can wash down the drain.
  7. Pat your skin dry. Measure your stoma with a measuring guide. Leave only 1/8" to 1/16" between the measuring guide and the stoma.
  8. Trace the correct size onto the back of the wafer with the starter hole in the middle. Cut out the hole.
  9. Apply skin protector to the peristomal skin where the wafer will be.
  10. Peel the paper from the wafer and apply the stomahesive paste around the cut circle in the wafer. Smooth it out with a wet finger (the water will help to keep it from sticking to your finger).
  11. Remove the paper backing from the tape, and apply the entire appliance over the stoma. Make sure the stoma is in the center of the hole. Press firmly and smooth wrinkles.
  12. Snap the new pouch onto the wafer, and give it a small tug to be sure it's in place.
  13. Press gently on the wafer for a minute to help it get a good seal.
  14. Close the bottom of the bag with the clip.


  • Stand over an old towel or some paper towels when changing bags to catch any waste from the stoma.
  • Don't eat late the night before a change. That way, stoma output will be less.
  • Some bleeding is normal when touching your stoma, but report any unusual color, size, shape, or bleeding to your ET nurse.
  • Try different products. Call your ET nurse or ostomy supply companies to ask for free samples. You may have to shop around to find what works for you.
  • Always follow any special instructions provided by your healthcare professional. This how-to is only a guideline.
3 Sources
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. Empty the Pouch SKILL. American College of Surgeons.

  2. Caring for a Colostomy. American Cancer Society. October 2019.

  3. Changing your ostomy pouch. US National Library of Medicine. November 2018.

By Amber J. Tresca
Amber J. Tresca is a freelance writer and speaker who covers digestive conditions, including IBD. She was diagnosed with ulcerative colitis at age 16.