Unit
- Colostomy: A surgically created opening in the colon that diverts stool through the abdominal wall. It is indicated for conditions such as colorectal cancer, diverticulitis, or trauma where the distal colon must be bypassed. Output consistency depends on the stoma site, becoming more formed as the location moves toward the descending colon.
- Ileostomy: An opening formed from the ileum, resulting in liquid-to-pasty output due to limited water absorption. It is commonly performed after total colectomy for inflammatory bowel disease or familial polyposis. Patients require diligent hydration and electrolyte monitoring because of continuous fluid loss.
- Urostomy: A urinary diversion that uses a segment of ileum to create a conduit from the ureters to the abdominal wall. It is indicated for bladder cancer, neurogenic bladder, or congenital anomalies. Unlike fecal ostomies, urostomy output is urine, which may contain mucus from the intestinal segment.
- Double-barrel colostomy: Two separate stomas created from a loop of colon, with the proximal stoma draining stool and the distal stoma draining mucus. This configuration allows for later closure and is often used in emergency settings where bowel resection is performed without primary anastomosis.
- End colostomy: A single stoma created by bringing the proximal end of the colon to the surface after removal of the distal segment. It is permanent when the rectum and anus are surgically removed, as in abdominoperineal resection for rectal cancer.
- Loop ostomy: A loop of bowel is brought to the surface and supported by a bridge or rod, then opened to create both a functional and a mucous fistula within the same stoma. This type is often temporary and allows for easier reversal.
- Indications for ostomy surgery: Common reasons include colorectal cancer, inflammatory bowel disease (Crohn disease, ulcerative colitis), diverticulitis with perforation, bowel obstruction, trauma, and congenital defects such as imperforate anus. The choice of ostomy type depends on the underlying condition and surgical goals.
- Elective versus emergency ostomy: Elective ostomies are planned with preoperative teaching and stoma site marking, while emergency ostomies are performed when immediate intervention is needed. Emergency patients may have less time for preparation, requiring postoperative education adjustments.
- Stoma site marking: Preoperative stoma site marking by a wound ostomy continence nurse is essential for optimal placement. The site is chosen in an area of flat, healthy skin within the rectus abdominis muscle to reduce hernia risk. It should be visible to the patient and clear of scars, creases, and bony prominences to ensure pouching system adherence.
- Postoperative assessment of stoma: Stoma appearance should be evaluated frequently in the early postoperative period. A healthy stoma appears moist, red, and slightly raised with a visible mucosal surface. Color changes to pale, dusky, or black may indicate ischemia, while swelling, necrosis, or retraction require immediate intervention to prevent complications.
- Dietary considerations for ostomy patients: Diet modifications help manage output consistency and gas. Low-fiber foods are often recommended initially to reduce blockage risk. Patients with ileostomy need to chew food thoroughly and avoid high-fiber foods that may cause obstruction. Gradually introducing new foods helps identify gas-producing or irritating items for long-term tolerance.
Terminology
- Stoma
- The surgically created opening through which waste exits the body; also called the ostomy.
- Pouching system
- A collection of components including a skin barrier and collection pouch that adheres around the stoma to contain output.
- Peristomal skin
- The skin surrounding the stoma, which requires careful protection from moisture and adhesives.
- Effluent
- The output from an ostomy, ranging from liquid to formed stool or urine depending on the type.
Quick Revision
- Ostomies are named by the segment of bowel used: colostomy, ileostomy, urostomy.
- Output consistency varies by stoma type and location within the digestive tract.
- Indications include cancer, inflammatory bowel disease, trauma, and congenital anomalies.
- Double-barrel and loop ostomies are often temporary; end ostomies may be permanent.
Disclaimer
Educational use only. Not intended for practical surgery, incisions, or other surgical procedures. It does not qualify you to perform physical operations.