Clinical trial Recruiting at 7 sites Interventional Ages 18 and up

Assessing esophageal function in patients with persistent GERD symptoms despite medication

Official title: Diagnostic Yield of Post PRandial Esophageal High Resolution Impedance Manometry in Patients With Gastro-Esophageal Reflux Disease Symptoms Resistant to Proton Pump Inhibitor Therapy

Run by Hospices Civils de Lyon · NCT03596476 · Data updated 2026-11-12

This study is testing a new way to check how well the esophagus works in people who still have GERD symptoms even after taking medication, to help find better treatments for them.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment330 (estimated)
SponsorHospices Civils de Lyon
Academic / other
Locations7 sites (Chambray-lès-Tours and 6 other locations)
StatusRecruiting
StartedMay 3, 2021
Main results expectedMay 3, 2027
Study endsMay 3, 2027
Registry record updatedJune 26, 2024
Trial IDNCT03596476 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adults over 18 years old who experience typical GERD symptoms at least twice a week despite ongoing PPI treatment.

Probably not a fit

Patients who have had previous esophago-gastric surgery or have contraindications to the diagnostic procedures will 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 evaluates the effectiveness of post-prandial esophageal high-resolution impedance manometry in patients suffering from gastro-esophageal reflux disease (GERD) symptoms that persist despite proton pump inhibitor (PPI) therapy. The study aims to identify underlying causes of these persistent symptoms through various diagnostic interventions, including upper gastrointestinal endoscopy and pH-impedance monitoring. By analyzing esophageal function, the trial seeks to improve the accuracy of GERD diagnoses and tailor treatment options for affected patients.

Why it matters

Potential benefit: If successful, this study could lead to more accurate diagnoses and improved treatment strategies for patients with GERD who do not respond to standard PPI therapy.

How similar studies have gone: Other studies have shown promise in using high-resolution impedance manometry for diagnosing GERD, indicating that this approach is supported by prior research.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patient older than 18 years
* Typical symptoms of GERD (heartburn, regurgitation) at least twice a week despite PPI therapy for at least one month.
* Reflux Disease Questionnaire (RDQ) score off PPI \> 3
* Subject with health insurance

Exclusion Criteria:

* Previous esophago-gastric surgery,
* Previous history of developing esophageal or gastric tumor, esophageal stricture, or esophageal varices
* Pregnancy (assessment at V0)
* Contraindication to general anesthesia,
* Contraindications to the wireless capsule pH-monitoring: pacemakers, implantable cardiac defibrillator,
* Contraindications to HRIM: inability to tolerate nasal intubation, significant bleeding disorders for which nasal intubation is contraindicated, known esophageal obstruction is preventing the passage of the HRIM probe.
* Intolerance or allergy to one component of the test meal,
* Intolerance or allergy to PPI,
* Inability to give consent,
* Mentally unbalanced patients, under supervision or guardianship
* Decline to participate in the study,
* Participation in another study at the same time

Where it's running

  • Service d'Hepato-Gastroenterologie - Hôpital Trousseau - CHU de Tours
    Chambray-lès-Tours, France
    Recruiting
  • Service d'Hepato-Gastroenterologie - Hôpital Louis Mourier - APHP
    Colombes, France
    Recruiting
  • Service d'Explorations Fonctionnelles Digestives - Hôpital Edouard Herriot - HCL
    Lyon, France
    Recruiting
  • Service d'Hepato-Gastroenterologie - Hôtel Dieu - CHU de Nantes
    Nantes, France
    Recruiting
  • Service d'Hepato-Gastroenterologie - Hôpital Haut Lévêque - CHU de Bordeaux
    Pessac, France
    Recruiting
  • Service d'Hepato-Gastroenterologie - Hôpital Pontchaillou- CHU de Rennes
    Rennes, France
    Recruiting
Show 1 more location
  • Service de Physiologie Digestive, Respiratoire, Urinaire et Sportive - CHU de Rouen
    Rouen, France
    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.