Clinical trial Recruiting at 6 sites Interventional Ages 18 to 70

Comparing bougie sizes in laparoscopic sleeve gastrectomy for obesity

Official title: Multicentric Randomized Prospective Study Assessing the Impact of the Bougie Calibration Size During Laparoscopic Sleeve Gastrectomy on the Rate of Postoperative Staple-line Leak Rate

Run by Assistance Publique - Hôpitaux de Paris · NCT02937649 · Data updated 2026-11-12

This study is testing whether using different sizes of a tool called a bougie during weight loss surgery can help prevent leaks in the stomach for people with severe obesity.

Quick facts

Study typeInterventional
Ages18 Years to 70 Years
SexAll
Enrollment1658 (estimated)
SponsorAssistance Publique - Hôpitaux de Paris
Academic / other
Locations12 sites (Boulogne-Billancourt and 11 other locations)
StatusRecruiting
StartedOctober 8, 2020
Main results expectedJune 8, 2025
Study endsSeptember 8, 2027
Registry record updatedApril 6, 2025
Trial IDNCT02937649 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 to 70 with a BMI over 40 or over 35 with related comorbidities, seeking primary bariatric surgery.

Probably not a fit

Patients with previous upper abdominal surgeries, significant comorbidities, or specific esophageal disorders 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 clinical trial aims to evaluate the impact of different bougie sizes on the rate of staple-line leaks following laparoscopic sleeve gastrectomy (LSG) in patients with morbid obesity. It is a prospective randomized trial that compares the outcomes of using standard bougie calibers (34, 36, or 38 Fr) versus a larger 48-Fr bougie. The hypothesis is that a larger bougie diameter may reduce the risk of gastric leaks without compromising long-term weight loss results. The study will involve patients who meet specific eligibility criteria and will be conducted at multiple hospital locations.

Why it matters

Potential benefit: If successful, this study could lead to reduced complications and improved outcomes for patients undergoing bariatric surgery.

How similar studies have gone: Other studies have explored bougie sizes in bariatric surgery, but this specific comparison of standard versus larger bougie sizes is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients between 18 and 70 years
* Sleeve gastrectomy as a primary bariatric procedure
* Body Mass Index (BMI) \> 40 kg/m² or \> 35 kg/m² associated with at least one comorbidity susceptible to improve after surgery (including arterial hypertension, obstructive sleep apnea syndrome and other severe respiratory disorders, severe metabolic disorders, particularly type 2 diabetes, incapacitating osteo-articular disorders, non alcoholic steatohepatitis)
* Decision for intervention after multidisciplinary discussion
* Written informed consent

Exclusion Criteria:

* Previous upper abdominal surgery (cholecystectomy excepted)
* ASA (American Society of Anesthesiologists) score \> 3
* Ongoing pregnancy or breast feeding
* Esophagus pathology or disorder (esophageal varices, esophageal diverticula, esophageal tumors, esophageal strictures)
* Coagulation disorder
* Patient not covered by social security service and patient on AME
* Patient under legal guardianship and trusteeship
* Patient with known silicon allergy (calibration bougie contains medical silicon)
* More generally, all other contraindications to the use of esophageal bougie MID-TUBE that have been the subject of a scientific paper or have been identified by the practitioner or practitioners

Where it's running

  • CHU Antoine Béclère
    Clamart, France
    Recruiting
  • Clinique de l'Yvette
    Longjumeau, France
    Recruiting
  • Service de chirurgie générale et digestive, œsogastrique et bariatrique - Hôpital Bichat
    Paris, France
    Recruiting
  • CHI - Centre Hospitalier Poissy/Saint-Germain-en-Laye
    Poissy, France
    Recruiting
  • CH Saint-Denis
    Saint-Denis, France
    Recruiting
  • Hôpitaux de Brabois
    Vandœuvre-lès-Nancy, France
    Recruiting
Show 6 more locations
  • Hôpital Ambroise Paré
    Boulogne-Billancourt, France
    Suspended
  • Hôpital Côte de Nacre CHU de Caen
    Caen, France
    Withdrawn
  • Centre hospitalier Intercommunal de Créteil
    Créteil, France
    Withdrawn
  • Hôpital MICHALLON, CHU de Grenoble
    La Tronche, France
    Withdrawn
  • Hôpital Dupuytren - Limoges
    Limoges, France
    Withdrawn
  • Clinique Mutualiste Chirurgicale
    Saint-Etienne, France
    Withdrawn

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.