Understanding Ostomy Bags and Colostomy Bags: Key Differences and Uses
Explore the essential differences between ostomy bags and colostomy bags, their purposes, and how to choose the right collection system for your needs.
An ostomy bag is a general term for specialized pouches designed to collect waste from surgically created openings in the intestines or urinary system. Among these, a colostomy bag specifically collects stool from the large intestine (colon).

A colostomy involves creating a surgical opening in the colon to divert stool away from damaged sections. Various types of ostomy bags and accessories are available to accommodate different medical needs and lifestyles.
This guide delves into the differences between colostomy and ostomy bags, types of ostomies, and how to select the best collection system tailored to your condition.
Ostomy vs. Colostomy: Defining the Terms
The terms ostomy and stoma are often used interchangeably in healthcare. Derived from the Greek word for "mouth," a stoma refers to an opening connecting an internal hollow organ to the outside of the body.
Ostomies can be created in various locations, such as the trachea (tracheostomy) or digestive tract. The name reflects the location: a colostomy is an opening in the colon, an ileostomy in the small intestine, and a urostomy in the urinary system.
Surgeons perform ostomies to bypass damaged or diseased areas, enabling waste elimination through the stoma. Examples include:
- Colostomy – diverts solid waste from the large intestine.
- Ileostomy – diverts waste from the small intestine.
- Urostomy – diverts urine from the bladder.
Varieties of Ostomy Bags and Their Features
Ostomy bags vary based on the stoma location and the type of waste they collect. Your choice depends on factors such as stoma size, surgical technique, and insurance coverage.
Considerations include the consistency and volume of output:
- Colostomy bags handle more solid stool since water absorption occurs earlier in the digestive process.
- Ileostomy bags collect more liquid stool due to higher water content.
- Urostomy bags are designed for urine collection and typically handle liquid output.
Ostomy bags can be categorized by attachment style:
One-piece systems
These integrate the adhesive and pouch into a single unit, simplifying application but requiring full replacement during changes, which may irritate sensitive skin.
Two-piece systems
These feature a separate adhesive base plate and pouch, allowing pouch changes without removing the base, reducing skin irritation.
Two-piece adhesive systems
Similar to two-piece systems but use a self-adhesive base plate, eliminating the need for additional paste or glue.
Distinguishing Colostomy and Ileostomy Bags
Colostomy and ileostomy bags both collect intestinal waste but differ in output consistency. Ileostomy output is more liquid due to its origin in the small intestine, whereas colostomy output is more solid after water absorption in the colon.
Both procedures involve creating a stoma through an abdominal incision and are commonly used to treat blockages, cancers, and inflammatory bowel diseases.
Ileostomies often address congenital or genetic conditions, while colostomies are frequently performed following trauma or injury to the lower digestive tract.
Some ileostomies include an internal pouch for waste collection, which can be drained manually, mimicking natural bowel movements.
Consult your healthcare provider to determine the most suitable ostomy type and collection method for your individual health needs.
Summary
Ostomies, including colostomies and ileostomies, create alternative pathways for waste elimination when the normal digestive or urinary routes are compromised. The choice of ostomy type and bag depends on the underlying medical condition and personal lifestyle.
Engage with your medical team to select the optimal ostomy bag and accessories that align with your health requirements and preferences.
References
- Babakhanlou R, et al. (2022). Stoma-related complications and emergencies. https://intjem.biomedcentral.com/articles/10.1186/s12245-022-00421-9
- Giordano V, et al. (2020). Describing self care and its associated variables in ostomy patients. https://onlinelibrary.wiley.com/doi/full/10.1111/jan.14499
- Ileostomy types. (2019). https://www.cancer.org/cancer/managing-cancer/treatment-types/surgery/ostomies/ileostomy/types.html
- The three types of ostomies. (n.d.). https://www.hollister.com/en/ostomycare/ostomylearningcenter/understandinganostomy/the3typesofostomies#
- Types of pouching systems. (n.d.). https://www.ostomy.org/types-pouching-systems/
- What is an ostomy? (n.d.). https://www.ostomy.org/what-is-an-ostomy/
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