Out-patiente Management for Gangrenous Acute Appendicitis: The PENDI-CSI II Randomized Clinical Trial. (PENDI-CSI II)

April 16, 2026 updated by: Fundación Pública Andaluza para la gestión de la Investigación en Sevilla

Safety, Efficacy, and Cost-effectiveness of Outpatient Surgery for Gangrenous Acute Appendicitis: The PENDI-CSI II Randomized Clinical Trial.

PHASE II-III CLINICAL TRIAL TO EVALUATE THE SAFETY, EFFECTIVENESS AND EFFICIENCY OF DISCHARGE TO OUTPATIENT SURGERY IN PATIENTS WITH ACUTE GANGRENOUS APPENDICITIS UNDERGOING EMERGENCY SURGERY.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
122

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Spain
    • Sevilla
      • Seville, Sevilla, Spain, 41013
        • Recruiting
        • Hospital Universitario Virgen del Rocío
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Acute gangrenous appendicitis confirmed during surgery.
  • Patient who meets the criteria to be discharged on an outpatient basis
  • Signature of informed consent.
  • Older than 14 years of age

Exclusion Criteria:

  • - Uncomplicated appendectomy.
  • Intra-operative purulent or faecaloid peritonitis
  • Appendicular abscess or plastron diagnosed by imaging.
  • Paralytic ileus preventing oral tolerance.
  • Need for placement of abdominal drainage.
  • ASA IV and some selected ASA III.
  • Immunosuppression.
  • Patients with active neoplasia.
  • Pregnancy.
  • Doubts in the definitive diagnosis.
  • Suspicion of inflammatory bowel disease.
  • No family support.
  • Failure to sign the informed consent form.
  • Impossibility to comply with the follow-up.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Supportive Care
  • Allocation: Randomized
  • Interventional Model: Sequential Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Case
Out management patient
Other: outpatient surgery
outpatient surgery
Experimental: Control
hospitalised patient
Other: Hospitalization
Hospitalization after surgery

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Safety of outpatient management of patient with acute gangrenous appendicitis after laparoscopic appendectomy.
Time Frame: 1 month after surgery
Numer of hospital readmission
1 month after surgery

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Number of participants achieving discharge criteria based on the Modified Aldrete Score (range 0-10, higher scores indicate better recovery) after appendectomy
Time Frame: Immediately postoperatively (before discharge)
The Modified Aldrete Score assesses recovery after anesthesia (range 0-10). Participants meeting predefined discharge criteria (e.g., score ≥9) will be considered eligible for outpatient management. Results will be reported as number and percentage of participants.
Immediately postoperatively (before discharge)
Determine the causes of failure of the outpatient regimen in our patients.
Time Frame: 30 days since the intervention
Record of the causes of failure of the outpatient system
30 days since the intervention
Association between baseline characteristics and failure of outpatient management within 30 days
Time Frame: 30 days since the intervention
The relationship between baseline demographic and clinical variables and outpatient management failure will be assessed using appropriate statistical methods (e.g., logistic regression). Results will be reported as odds ratios with 95% confidence intervals.
30 days since the intervention
Time off work
Time Frame: 30 days since surgery
Time until patients fully return to work
30 days since surgery
Efficiency of outpatient management
Time Frame: 30 days since surgery
Compare the costs of outpatient care versus hospitalization for patients with acute gangrenous appendicitis undergoing laparoscopic surgery (cost-minimization analysis).
30 days since surgery
Degree of satisfaction
Time Frame: 30 days since surgery
To measure the degree of satisfaction expressed by our patients with outpatient management after laparoscopic appendectomy, using a 14-item patient satisfaction questionnaire based on a 4-point Likert scale (minimum score 1, maximum score 4 per item), where higher scores indicate greater satisfaction (better outcome).
30 days since surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Fundación Pública Andaluza para la gestión de la Investigación en Sevilla

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 1, 2025

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 25, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 2, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
April 13, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 21, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 16, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • PENDI-CSI II

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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