15 - Colon, Retum, Anus (Absite 2024)

Inner circular muscle

The ____ muscle joins to form the internal anal sphincter

1. Internal sphincter

2. External sphincter

3. Puborectalis

Fecal incontinence may be due to damage to one or more of the following muscles:

1.

2.

3.

Stoma necrosis BELOW the level of the fascia

This is caused by skeletonizing the distal small bowel and/or creating an overly tight fascial defect

The most common adverse outcome in the early postoperative period for an ileostomy is stoma necrosis ____ (above/below) the level of the fascia

10 to 30%

Family history may play a role in inflammatory bowel disease as ___ to ___% of patients with inflammatory bowel diseasereport a family member with the same disease.

60 minutes

The ideal time to administer prophylactic antibiotics is within ___ minutes prior to incision

Crohn disease

Which form of inflammatory bowel disease is characterized by non-continuous colonic involvement (skip lesions)?

Ulcerative colitis

Which form of IBD is characterized histologically by crypt abscesses with neutrophils, ulcers, and bleeding?

Crohn disease

Fistulas occur when ulcers penetrate entire thickness of intestinal wall, leading to sinus tract that communicates between multiple organs; this permits formation of skip lesions

Which form of IBD is associated with fistula formation?

Ulcerative colitis

Which form of IBD involves only mucosal and submucosal ulcers?

Ulcerative colitis

______ (IBD) is characterized by continuous colonic lesions that always involve the rectum

Salicylates (Sulfasalazine and 5-acytyl salicylic acid)

What is the first-line therapy for inflammatory bowel disease in the outpatient setting?

Internal fistula or abscess and obstruction

What are the most common indications for surgery for Crohn disease? (2)

Mucosa and muscularis mucosa

Majority of colonic diverticula are false diverticula

What layers would you expect to be present in the walls of a colonic diverticula?

Colovesical fistulas

Followed by colovaginal and coloenteric

What is the most common type of fistulas that develop in complicated diverticulitis?

Villous adenoma

What type of colonic polyp is most associated with malignancy?

Adenomatous polyps

What type of colonic polyp is most commonly found?