Laparoscopic vs Open Appendectomy in Obese Patients

September 10, 2026 updated by: Saira Khan, University of Health Sciences Lahore

Evaluation of Post Operative Outcomes of Laparoscopic and Open Appendectomy in Obese Patients

Acute appendicitis is one of the most common surgical emergencies globally. While surgical removal of the appendix (appendectomy) is the definitive treatment, the optimal surgical approach-laparoscopic versus open-remains widely debated, particularly in obese patients. Obese individuals present unique surgical challenges due to increased abdominal wall thickness, which often necessitates larger skin incisions during open procedures, potentially increasing postoperative pain, wound healing times, and wound complications.

This study aims to compare the postoperative outcomes of laparoscopic appendectomy versus standard open appendectomy in obese patients (BMI ≥ 30 kg/m²) presenting with acute appendicitis. Participants will be randomly assigned to undergo either open appendectomy or laparoscopic appendectomy. The primary outcomes evaluated will be the incidence of surgical site infections (including superficial wound infections and intra-abdominal abscesses) up to 30 days post-procedure and the total length of hospital stay (in days).

Study Overview

Study Type

Interventional

Enrollment (Estimated)

166

Phase

  • Not Applicable

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

Ages Eligible for Study

  • Child
  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Obese patients with Body Mass Index (BMI) ≥ 30 kg/m².
  2. Clinical diagnosis of acute appendicitis based on Alvarado score (history of right lower quadrant or periumbilical pain shifting to RLQ, nausea and/or vomiting, fever > 38 °C, RLQ guarding and tenderness, and/or leukocytosis > 10,000 cells/mL).
  3. Age between 15 and 50 years.
  4. Both male and female patients.

Exclusion Criteria:

  1. Immunocompromised patients (e.g., HIV infection or current steroid therapy).
  2. History of prior chemotherapy, radiotherapy, or recurrent infections.
  3. History of drug or alcohol abuse.
  4. Severe hepatic, renal, or cardiovascular dysfunction.
  5. History of previous abdominal surgery.
  6. Appendicular malignancy.
  7. Pregnant women.
  8. Preoperative findings indicating appendiceal perforation.

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Open Appendectomy
Participants undergo open appendectomy using a standard grid-iron incision under general anesthesia. Appendiceal base ligation and closure are performed in standard anatomical layers.
Open surgical removal of the appendix performed via a standard grid-iron incision under general anesthesia with standard prophylactic antibiotics.
Experimental: Group 2: Laparoscopic Appendectomy
Participants undergo laparoscopic appendectomy using a standard 3-port technique (umbilical, left iliac fossa, and lower midline ports) under general anesthesia.
Laparoscopic surgical removal of the appendix using a standard 3-port configuration (umbilical, left iliac fossa, and lower midline ports) under general anesthesia with standard prophylactic antibiotics.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Incidence of Surgical Site Infection (SSI)
Time Frame: Up to 30 days postoperatively
Proportion of patients who develop a surgical site infection, defined as either superficial/deep wound infection (presence of purulent discharge, erythema, localized swelling, or requiring reopening) or intra-abdominal abscess (confirmed via ultrasound in patients presenting with abdominal pain, fever, or fullness)
Up to 30 days postoperatively
Length of Hospital Stay
Time Frame: From day of surgery up to discharge (up to 30 days postoperatively)
The total number of days the patient remained in the hospital postoperatively until meeting discharge criteria (afebrile, tolerating a regular diet, and achieving good pain control).
From day of surgery up to discharge (up to 30 days postoperatively)

Collaborators and Investigators

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

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 (Estimated)

October 2, 2026

Primary Completion (Estimated)

April 2, 2027

Study Completion (Estimated)

April 30, 2027

Study Registration Dates

First Submitted

September 9, 2026

First Submitted That Met QC Criteria

September 10, 2026

First Posted (Actual)

September 16, 2026

Study Record Updates

Last Update Posted (Actual)

September 16, 2026

Last Update Submitted That Met QC Criteria

September 10, 2026

Last Verified

September 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

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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