Evaluation of the Care Provided to Patients Who Underwent Bariatric Surgery and Were Lost to Follow-up 5 Years After Surgery

NCT07118540 | Recruiting

• 1 other identifier: 16062025
• Study Type: observational
• Target: 176
• Locations: 1 country
• Sites: 2

Brief Summary

In 2025, bariatric surgery combined with nutritional and psychological support is one of the most effective treatments for patients with morbid obesity. (2)(3) However, it causes various deficiencies, such as vitamin and iron deficiencies, which justify lifelong personalised vitamin supplementation and, consequently, lifelong medical supervision. The latest recommendations from the French National Authority for Health (Haute Autorité de Santé) clearly state that patients must commit to lifelong medical follow-up after bariatric surgery. (HAS, February 2024, R94). R94. Regular biological monitoring after bariatric surgery is recommended: three times in the first year and then once or twice a year thereafter. Within the OBESEPI cohort (clinical trial number NCT02663388), which comprises patients who underwent surgery at Nancy University Hospital between 2013 and 2018, we observed that over 50% of patients were lost to follow-up five years after surgery.

Conditions

Obesity &Amp; Overweight

Keywords

obesity; bariatric surgery; overweight; lost to follow-up

Outcome Measures

Primary Outcomes (1)

• Assess the proportion of patients lost to follow-up from the OBESEPI cohort who are still receiving medical care (at another centre or from their general practitioner)in %.

  Assess the proportion of patients lost to follow-up from the OBESEPI cohort who are still receiving medical care (at another centre or from their general practitioner) in %.

  from bariatric surgery to 5 years after

Secondary Outcomes (5)

• Describe the reasons for discontinuing post-bariatric surgery follow-up at Nancy University Hospital.

  from surgery to 5 years after

• Describe how often patients lost to follow-up by Nancy University Hospital are followed up by another centre or their attending physician

  from surgery to 5 years after

• Compare the proportion of patients receiving vitamin supplementation between those lost to follow-up in the OBESEPI cohort and those still being monitored.

  from time of surgery to 5 years after

• Compare comorbidities in patients lost to follow-up in the OBESEPI cohort with those in patients still being monitored (in %)

  from surgery to 5 years after

• Compare the proportion of post-bariatric surgery complications requiring surgery (%)

  from bariatric surgery to 5 years after

Eligibility Criteria

• Age: 18 Years - 65 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

These patients were obese with BMI\> 35kg/m2. These patients, who were candidates for scheduled bariatric surgery, were recruited during preoperative consultations by surgeons involved in the protocol at the Digestive, Hepatobiliary, Endocrine and Oncology Surgery Department at Nancy University Hospital between 2013 and 2018 (the OBESEPI cohort).

You may qualify if:

• \> Patients included in the OBESEPI cohort;
• Individuals who have received complete information about the organisation of the research and have not objected to their participation and the use of their data;
• Affiliation with a social security scheme.

You may not qualify if:

• \>Patient who objects to participating in this research;
• Pregnant and breastfeeding women;
• Patients under legal guardianship or curatorship;
• Patients deprived of their liberty by a judicial or administrative decision.

Sponsors & Collaborators

• Central Hospital, Nancy, France: lead

Study Sites (2)

Centre Hospitalier Universitaire de Nancy

Nancy, Lorraine, 54000, France

ENROLLING BY INVITATION

Centre Hospitalier Universitaire de Nancy

Nancy, Lorraine, 54000, France

RECRUITING

Related Publications (1)

• (1)Global, regional, and national prevalence of adult overweight and obesity, 1990-2021, with forecasts to 2050: a forecasting study for the Global Burden of Disease Study 2021 Lancet. 2025 Mar 8; (2)Peirson L, Douketis J, Ciliska D, Fitzpatrick-Lewis D, Ali MU, Raina P. Treatment for overweight and obesity in adult populations: a systematic review and meta-analysis. CMAJ Open. Oct 2014;2(4):E306-317. (3)Jackson VM, Breen DM, Fortin JP, et al. Latest approaches for the treatment of obesity. Expert opinion on drug discovery. 2015;10(8):825-839. (4)Recommandation HAS février 2024 : Prise en charge de l'obésité de niveau 2 et 3 https://www.has-sante.fr/upload/docs/application/pdf/2024-02/reco369_recommandations_obesite_2e_3e_niveaux_ii_cd_2024_02_08_preparation_mel.pdf (5)Chirurgie bariatrique : état des lieux en France en 2019 Halimi et al Médecine des maladies Métaboliques

  BACKGROUND

MeSH Terms

Conditions

Obesity; Overweight

Condition Hierarchy (Ancestors)

Overnutrition; Nutrition Disorders; Nutritional and Metabolic Diseases; Body Weight; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Central Study Contacts

Claire NOMINE-CRIQUI, MD

CONTACT

+33632149814; c.nomine-criqui@chru-nancy.fr

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: RETROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Staff surgeon in Visceral Metabolic and oncologic surgery department, head of the endocrine surgery Unit

Study Record Dates

• First Submitted: July 8, 2025
• First Posted: August 12, 2025
• Study Start: June 1, 2025
• Primary Completion: October 10, 2025
• Study Completion: October 10, 2025
• Last Updated: August 12, 2025

Record last verified: 2025-08

Locations

FR (2)