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Management of acute uncomplicated diverticulitis without antibiotics: a single-centre cohort study.

Colorectal Disease 2016 November
AIM: This study aimed to evaluate the implementation of nonantibiotic management of acute uncomplicated diverticulitis at a large university hospital in Norway with regard to management failure, disease recurrence and complications.

METHOD: On 1 January 2013 we implemented a new policy for the management of acute uncomplicated diverticulitis without antibiotics. Antibiotic treatment was only provided in the case of defined criteria. All patients admitted from 1 January 2013 to 30 June 2014 with a CT-verified, left-sided, acute uncomplicated diverticulitis were included in the study and evaluated retrospectively, with 12 months' follow-up.

RESULTS: Of 244 admissions with acute uncomplicated diverticulitis, 177 (73%) were managed without antibiotics. Among these there were seven (4%) management failures, including five patients in whom a deteriorating clinical picture prompted antibiotic treatment and two readmissions within 1 month due to persisting symptoms. The only complication in this group was one fistula (< 1%). Eight (5%) patients had a recurrence of acute diverticulitis requiring hospital care and two (1%) underwent elective surgery within the first year. Twenty (8%) patients met predefined exemption criteria and received antibiotics from admission, six (30%) of whom developed complications. The recurrence rate in this group was 10% and none had surgery performed. The 47 (20%) policy violators treated with antibiotics from admission had no complications. Their recurrence rate was 11% and one (2%) patient underwent elective surgery.

CONCLUSION: This study confirms that nonantibiotic management of acute uncomplicated diverticulitis is safe and feasible. Most complications occurred in a small group of high-risk patients treated with antibiotics.

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