There are two main types of colostomies: A loop colostomy and an end colostomy. Another term you may hear is a double-barrel colostomy. Which type of colostomy is needed depends on your condition.
Loop colostomy
If the operation is a temporary measure to relieve pain, a loop colostomy will most often be the preferred choice as it's easier to reverse. The operation is therefore done to allow treatment in the large bowel or relieve a blocked bowel. However, it can, in some rare cases, be permanent.
In a loop colostomy the intestine is not entirely severed, instead a new opening is cut in the intestine which is attached to the abdominal wall to form a single stoma with two openings.
A loop colostomy may be located on the right or left side of the abdomen based on the location in the large intestine. You may hear terms like a loop ascending colostomy or loop descending colostomy. An ascending loop colostomy redirects the ascending colon, the first part of your colon that travels up the right side of your abdomen. A transverse loop colostomy redirects the transverse colon, the part that travels horizontally across your abdomen from the right side to the left. A descending loop colostomy redirects your descending colon, which travels down the left side.
End colostomy
An end colostomy can be either temporary or permanent. A temporary end colostomy is typically recommended when a portion of the bowel has been removed due to a disease, while the remaining bowel needs time to heal before the two ends can be rejoined.
A permanent end colostomy, on the other hand, is chosen in situations where reconnecting the two sections of the intestine is either too risky or not feasible.
Regardless of whether your end colostomy is temporary or permanent, the procedure is to bring the end of the colon through the abdominal wall and stitch the edges of upper colon to the outside of your stomach - which forms a stoma. The stoma may be located on the right or left side of the abdomen based on the location in the large intestine. You may hear terms like an end descending colostomy or end sigmoid colostomy.
Double-barrel colostomy
A double-barrel colostomy may also be created. This is where two separate stomas are created leading in opposite directions along the intestine. However, this is not as common as a loop or end colostomy (this is different from a loop colostomy because two separate stomas are created).