Current Antibiotic Regimen Recommendations for Diverticulitis

Classification-Based Approach to Antibiotic Therapy

The World Journal of Emergency Surgery recommends that antibiotic coverage must include gram-positive, gram-negative, and anaerobic bacteria for patients with complicated diverticulitis 2, 3
Consider anti-ESBL producer coverage for patients with prior exposure to antibiotics or comorbidities requiring concurrent antibiotic therapy, as recommended by the World Journal of Emergency Surgery 2, 3

For complicated diverticulitis, the duration of antibiotic therapy should be 4 days after adequate source control, as recommended by the World Journal of Emergency Surgery 2, 3, 5

The World Journal of Emergency Surgery recommends that short course (4 days) of antibiotic therapy is sufficient after adequate source control in complicated diverticulitis 2, 3, 5
Patients with ongoing signs of peritonitis or systemic illness beyond 5-7 days warrant further diagnostic investigation, according to the World Journal of Emergency Surgery 3, 5

Local epidemiological data and resistance profiles should guide antibiotic selection, as recommended by the World Journal of Emergency Surgery 2, 3
The STOP IT trial demonstrated that outcomes after 4 days of antibiotics were similar to longer courses extending until resolution of physiological abnormalities, according to the World Journal of Emergency Surgery 2, 3
Right-sided colonic diverticulitis should be treated with the same principles as left-sided diverticulitis, as recommended by the World Journal of Emergency Surgery 3