Gastric Neuromuscular Function in GERD

NCT ID: NCT05719168

Last Updated: 2023-02-08

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-10-01

Study Completion Date

2023-12-01

Brief Summary

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Bodysurface gastric mapping (BSGM) will be used to assess gastric neuromuscular function in healthy controls and patients with medical refractory gastroesophageal reflux disease (GERD).

Participants will undergo BSGM for 4-hours in addition to high resolution manometry (HRM), pH-impedance monitoring, and gastric emptying breath test.

Detailed Description

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This is a clinical trial of a non-invasive BSGM medical device (Gastric Alimetry) in patients with medical refractory GORD and healthy controls to determine the differences in gastric electrical activity, and correlate with adjacent measurements of gastro-esophageal function.

Patients referred to the Functional Gut Clinic for standard care investigation of GORD with HRM and pH-impedance monitoring will be recruited. Healthy volunteers will be recruited via advertisement.

All patients and healthy volunteers will undergo BSGM at the research site, which lasts around 4.5 hours. After a 0.5 hour baseline, subjects will undergo HRM and pH-impedance monitoring concomitantly. A test meal of porridge with C13 labelled octanoic acid will be consumed with BSGM and breath samples recorded for 4.0 hours after meal completion. The HRM catheter will be removed after 1.0 hour from finishing the test meal whist the pH-impedance monitoring will continue for the remainder of the site visit and for the remainder of the 24-hour study period whilst the subject is at home to quantify reflux.

Conditions

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GERD

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Prospective, cross-sectional
Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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Patients with medical refractory GERD

Participants undergo BSGM for 4.5 hours with simultaneous oesophageal manometry, pH-impedance monitoring and gastric emptying breath tests. Following completion, participants continue with ambulatory pH-impedance monitoring for a further 24-hours.

Participants undergo a hydrogen and emthane breath test on a seperate day.

Group Type EXPERIMENTAL

Body Surface Gastric Mapping

Intervention Type DEVICE

64-channel electrode array placed on the outer abdomen

Healthy controls without gastrointestinal symptoms

Participants undergo BSGM for 4.5 hours with simultaneous oesophageal manometry, pH-impedance monitoring and gastric emptying breath tests. Following completion, participants continue with ambulatory pH-impedance monitoring for a further 24-hours.

Group Type ACTIVE_COMPARATOR

Body Surface Gastric Mapping

Intervention Type DEVICE

64-channel electrode array placed on the outer abdomen

Interventions

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Body Surface Gastric Mapping

64-channel electrode array placed on the outer abdomen

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Aged 18-70 years old
* BMI 18-35
* Able to understand written and spoken English
* Able to provide written consent
* Able to understand risks and benefits


* Referred for 24-hour pH-impedance monitoring
* Aged 18-70 years old
* BMI 18-35
* Able to understand written and spoken English
* Able to provide written consent
* Able to understand risks and benefits

Exclusion Criteria

* Antacid use (e.g. PPI, H2RA or Gaviscon) within last 12-months
* Active use of other medications known to impact gastric motility
* Upper GI symptoms including but not limited to heartburn, regurgitation, epigastric pain, nausea and bloating
* Significant medical condition
* History of skin allergies or hypersensitivity
* Active abdominal wounds or abrasions, fragile skin
* Current pregnancy
* Vulnerable group e.g. prisoners/cognitive impairment/institutionalised individuals
* Regular cannabis users (unable to abstain for 7-days)
* Opioid user
* Unable to use a tablet device

GORD patients


* Systemic or metabolic disorder known to cause gastric dysmotility other than diabetes (e.g. scleroderma, multiple sclerosis, hyperthyroidism).
* History of upper GI surgery or hiatal hernia (\>5cm, paraesophageal, or 'large' on endoscopy report)
* Diabetic and on insulin
* Proven mechanical bowel obstruction
* History of skin allergies or hypersensitivity
* Active abdominal wounds or abrasions, fragile skin
* Current pregnancy
* Vulnerable group - prisoners/cognitive impairment/institutionalised individuals
* Regular cannabis users (unable to abstain for 7-days)
* Opioid user
* Unable to use a tablet device
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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The Functional Gut Clinic

OTHER

Sponsor Role lead

Responsible Party

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Dr Anthony Hobson

Clinical Director

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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The Functional Gut Clinic

Manchester, Greater Manchester, United Kingdom

Site Status RECRUITING

Countries

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United Kingdom

Central Contacts

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Anthony Hobson, PhD

Role: CONTACT

01613027777

Facility Contacts

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Jordan Haworth, BSc

Role: primary

01613027777

Other Identifiers

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FGC-22-002

Identifier Type: -

Identifier Source: org_study_id

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