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NCT Number: NCT07824180

Improving the Treatment of Acute Uncomplicated Diverticulitis in Routine Care

Acute uncomplicated diverticulitis is often treated with antibiotics, although current evidence shows that antibiotics are not always necessary. This study will evaluate whether a more standardized approach to treatment can reduce unnecessary antibiotic use without increasing the risk of treatment failure.

The study will compare patients treated before and after the new treatment approach is introduced in participating Swiss hospitals. Information on treatment, hospital admissions, complications and recurrence of diverticulitis will be collected. Patients will be followed for up to 24 months.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age 18 years or older
  • CT-confirmirmed acute uncomplicated diverticulitis of the left colon
  • Ability to provide informed consent for participants in the prospective phase

Exclusion criteria

  • Complicated acute diverticulitis, defined as diverticulitis with abscess, perforation (free air), fistula, or distant free fluid
  • Diverticulitis of the right or transverse colon

-.Alternative diagnosis explaining the participant's symptoms

  • No possibility of completing the 90-day follow-up
  • Inability to provide informed consent for the prospective phase

Treatment and study plan

standardized treatment algorithm

Other

A standardized treatment approach based on clinical findings, laboratory results, comorbidities, immunosuppression status, and CT findings is introduced to support treatment decisions in patients with acute uncomplicated diverticulitis. Depending on these factors, patients may be managed with or without antibiotics.

Primary outcomes

  1. Treatment failure

    Time frame: Within 90 days after diagnosis

    Treatment failure is defined as a composite outcome including progression to complicated diverticulitis requiring percutaneous abscess drainage or surgery, delayed initiation of antibiotics after initial management without antibiotics, or unplanned hospital admission following initial outpatient treatment.

Secondary outcomes

  1. Antibiotic use

    Time frame: Within 90 days after diagnosis

    Proportion of participants receiving antibiotics

  2. Adherence to the standardized treatment approach

    Time frame: At the initial treatment decision

    Proportion of participants whose management is consistent with the standardized treatment approach.

  3. Outpatient versus inpatient management

    Time frame: At the initial treatment decision

    Proportion of participants initially managed as outpatients versus inpatients.

  4. Hospital admission

    Time frame: Within 30 days after diagnosis

    Proportion of participants readmitted to hospital.

  5. Recurrence of diverticulitis

    Time frame: Within 24 months after diagnosis

    Proportion of participants experiencing recurrence of diverticulitis.

Study contacts

Contact information is provided by the study sponsor or research team.

Dimitri Christoforidis, MD

CONTACT

[email protected]

Elena Porro, Msc

CONTACT

[email protected]

0041918117038

Sponsors and collaborators

Lead sponsor

Ente Ospedaliero Cantonale, Bellinzona

Other

Registry information

Official study title

From Guidelines to Real-world Practice: a Pragmatic Before and After Study on the Treatment of Acute Uncomplicated Diverticulitis (AUD) Based on a Risk Factor Driven Treatment Algorithm (AUD Management Algorithm Protocol)

Acronym: AUD

Important dates

Study start
2026
Primary completion
2027
Study completion
2027
First posted
Sep 17, 2026
Registry last updated
Sep 21, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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