Clinical trial Recruiting at 1 site Observational Ages 18 to 69

Evaluating the impact of peritoneal irrigation during laparoscopic appendectomy for appendicitis

Official title: REsiDENT1 (Re-assessment of Appendicitis Evaluation During Laparoscopic Appendectomy: Do we End a Non-standardized Treatment Approach and Habit?): Peritoneal Irrigation During Laparoscopic Appendectomy-Does the Grade of Contamination Matter? A Prospective Multicenter Resident-based Evaluation of a New Classification System

Run by Niguarda Hospital · NCT05075252 · Data updated 2026-11-12

This study is testing if washing out the abdomen during laparoscopic surgery for appendicitis can help prevent infections in adults with this condition.

Quick facts

Study typeObservational
Ages18 Years to 69 Years
SexAll
Enrollment1067 (estimated)
SponsorNiguarda Hospital
Academic / other
Locations1 site (Milan)
StatusRecruiting
StartedOctober 1, 2019
Main results expectedJune 30, 2024
Study endsSeptember 30, 2027
Registry record updatedApril 16, 2026
Trial IDNCT05075252 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adults aged 18 to 69 who are undergoing laparoscopic appendectomy for acute appendicitis.

Probably not a fit

Patients outside the age range of 18 to 69, those with previous appendectomies, or those with other intra-abdominal infections may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This prospective observational multicenter trial aims to assess the effects of laparoscopic lavage during laparoscopic appendectomy on the incidence of postoperative intra-abdominal abscesses in adult patients with acute appendicitis. The study will categorize patients based on the grade of contamination and severity of appendicitis to determine if the use of irrigation offers any advantages over suction alone. By introducing a classification system for different degrees of appendicitis and contamination, the study seeks to clarify the relationship between surgical techniques and postoperative outcomes. Data will be collected preoperatively, intra-operatively, and postoperatively to identify predictive factors for infectious complications.

Why it matters

Potential benefit: If successful, this study could lead to improved surgical protocols that reduce the risk of postoperative complications for patients undergoing laparoscopic appendectomy.

How similar studies have gone: While there are few randomized controlled trials on this topic, existing studies have shown mixed results, indicating that this approach may be novel and requires further investigation.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients between 18 and 69 years old
* Surgical laparoscopic approach for AA
* Intra-operative and histological diagnosis of AA

Exclusion Criteria:

* Patients \< 18 years old or \> 69 years old
* Previous appendectomy
* Previous appendicitis treated conservatively
* Open approach for surgery or intra-operative conversion
* Co-existence of other intra-abdominal infections (IAI)
* Patients with immunodeficiency
* Patients treated with steroid, immunosuppressant, or CHT within previous 6 months

Where it's running

  • ASST GOM Niguarda
    Milan, Italy
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.