Management of Diverticulitis

Contraindications for Enema Use

The American College of Radiology recommends that enemas should not be used in patients with acute diverticulitis due to the significant risk of colonic perforation, regardless of constipation severity 1, 2
Colonic distention from enemas increases transmural pressure and directly raises perforation risk in inflamed diverticular tissue, which is already weakened by the extramucosal inflammatory process 1, 3
The American College of Radiology explicitly states that colonic distention (whether by colonoscopy or air-contrast enema technique) increases the risk of colonic perforation in acute diverticulitis 1, 4

Oral laxatives are the appropriate treatment for constipation in diverticulitis patients, not enemas, with options including osmotic laxatives such as polyethylene glycol (PEG) and stimulant laxatives like senna 5, 6
The National Comprehensive Cancer Network recommends maintaining adequate fluid intake throughout treatment with oral laxatives 5
If constipation persists despite oral laxatives, it is recommended to rule out bowel obstruction with imaging (CT scan is preferred) before any further intervention 2, 5

Small-volume rectal suppositories (bisacodyl) may be considered as a safer alternative to enemas, but only after CT imaging confirms no obstruction, perforation, or abscess, and the acute inflammatory phase has resolved 2, 5
The American College of Radiology and the National Comprehensive Cancer Network recommend avoiding all rectal interventions (including suppositories and enemas) in patients with neutropenia, thrombocytopenia, recent pelvic radiotherapy, or recent colorectal surgery 2, 5

The American College of Radiology recommends that enemas remain absolutely contraindicated in all scenarios of complicated diverticulitis, including abscess formation, perforation, fistula, obstruction, and peritonitis 2, 4
Management of complicated diverticulitis consists of intravenous antibiotics, percutaneous drainage for localized abscesses, and surgical consultation for emergent laparotomy if generalized peritonitis is present 2, 4