What is a Colostomy?
A colostomy is a surgical procedure in which a portion of the large intestine (colon) is brought through an opening created in the abdominal wall to form a stoma. This opening allows stool to leave the body and collect in a special colostomy bag attached to the skin instead of passing through the rectum and anus. Colostomy is usually performed when the lower part of the intestine needs time to heal or cannot function normally due to conditions such as colorectal cancer, bowel obstruction, trauma, inflammatory bowel disease, or congenital abnormalities. The procedure may be temporary, allowing the bowel to recover before being reconnected, or permanent if the lower colon or rectum has been removed. After surgery, patients are guided on proper stoma care and colostomy bag management to maintain hygiene and comfort in daily life.
Types of Colostomy:
Colostomy procedures are classified based on the section of the large intestine (colon) used to create the stoma. The location of the stoma determines the consistency of stool, frequency of output, and the type of care required after surgery. Understanding the different types of colostomy helps patients and caregivers manage stoma care effectively and adapt to life after surgery.
Ascending Colostomy
An ascending colostomy is created from the ascending colon, which is located on the right side of the abdomen. In this type, stool passes through only a small portion of the colon before exiting the body. Because the colon has had less time to absorb water, the stool is usually liquid or semi-liquid and may contain digestive enzymes that can irritate the skin around the stoma.
This type of colostomy is less common and is typically performed when disease or injury affects the lower parts of the colon. Patients with an ascending colostomy often require specialized colostomy bags and careful skin protection to maintain hygiene and prevent irritation.
Transverse Colostomy
A transverse colostomy is formed from the transverse colon, which runs across the upper abdomen. The stoma is usually positioned in the upper middle or right side of the abdomen. This type of colostomy may be created as either a loop colostomy (a loop of bowel brought to the surface) or a double-barrel colostomy (two separate openings for stool and mucus).
Transverse colostomies are often temporary procedures performed to divert stool away from a healing section of the bowel after surgery, trauma, infection, or inflammation. The stool in this type is usually soft to semi-formed, and patients typically experience moderate output throughout the day.
Descending Colostomy
A descending colostomy is created from the descending colon, located on the left side of the abdomen. By the time stool reaches this part of the colon, most of the water has already been absorbed, resulting in semi-formed or formed stool.
Patients with a descending colostomy may experience more predictable bowel output compared to other types. In some cases, individuals may be able to establish a routine using colostomy irrigation, which helps regulate bowel movements and reduce the need for frequent pouch changes.
Sigmoid Colostomy
A sigmoid colostomy is the most common type of colostomy. It is created from the sigmoid colon, the last section of the large intestine before the rectum. The stoma is usually placed on the lower left side of the abdomen.
Because stool has passed through nearly the entire colon, it is usually well-formed and similar to normal bowel movements. Many patients with a sigmoid colostomy find it easier to manage their colostomy care, and bowel movements may occur once or twice a day. This type of colostomy is often performed for conditions such as colorectal cancer, diverticular disease, or severe bowel injury.
Each type of colostomy is chosen based on the patient’s medical condition, the part of the colon affected, and the purpose of the surgery (temporary or permanent