Final answer:
A double barrel colostomy is a surgical procedure that involves attaching two portions of the large intestine to the abdominal wall, resulting in two separate stomas and colostomy bags to collect waste.
Step-by-step explanation:
A double barrel colostomy is a surgical procedure that attaches two portions of the large intestine (the transverse and sigmoid colon) to the posterior abdominal wall. It involves creating two individual stomas or openings on the abdomen to divert stool. Each stoma is connected to one of the sections of the large intestine, allowing for separate colostomy bags to collect waste.