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Could we ditch antibiotics after a burst appendix? new study investigates

NCT ID NCT07656636

Knowledge-focused Sponsor: London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Sep 18, 2026 · Updated 3 times

Summary

This pilot study looks at whether it is safe to stop giving antibiotics after surgery for a burst (perforated) appendix. About 100 adults will be randomly assigned to receive either antibiotics or no antibiotics after their operation. The main goal is to see if a larger study is possible, while also checking infection rates and patient recovery.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
oral antibiotics (postoperative antibiotico-prophylaxis)
What this could lead to
If successful, this could show that avoiding antibiotics after surgery for a burst appendix is safe, potentially reducing unnecessary antibiotic use and side effects.
What could go wrong
This is a small pilot study, not designed to prove effectiveness. Results may not apply to all patients, and there is a risk of increased infections in the no-antibiotics group.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 100 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Jan 2027

An estimate. Start dates often move.

Expected to finish

May 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Adults aged 18 years or older * Scheduled to undergo an open or laparoscopic appendectomy * Complicated appendicitis confirmed intra-operatively (AAST Appendicitis Grade III or IV) Exclusion Criteria: * Patients demonstrating signs of septic shock for whom the omission of systemic antibiotics is contraindicated * Patients with positive blood cultures for whom antibiotics are required for treatment of the bacteremia * Immunosuppressed patients * AAST Appendicitis Grade V

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Conditions

The condition(s) this trial relates to.

appendicitis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Perforated appendicitis

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  2. A doctor treating you

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Other studies related to the condition(s) this trial covers.