Body Surface Gastric Mapping to Evaluate Patients With Upper Gastrointestinal Symptoms and Controls

Gastroparesis Clinical Trial

Official title:

Body Surface Gastric Mapping to Evaluate Patients With Upper Gastrointestinal Symptoms and Controls

Clinical Trial Details — Status: Enrolling by invitation

Administrative data

• NCT number: NCT05812339
• Other study ID #: 19-1925
• Status: Enrolling by invitation
• Start date: November 1, 2022
• Est. completion date: December 31, 2024

Study information

• Verified date: February 2023
• Source: University of Calgary
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

This is an analytical validation observational cohort study is designed to provide evidence of: safety and reliability of Body Surface Gastric Mapping using the Gastric Alimetry System (GAS), normal reference values, and correlation of metrics with patient symptoms among healthy adults and patients diagnosed with upper abdominal motility disorders.

GAS is intended to record, store, view and process gastric myoelectrical activity. This is a proprietary system consisting of multiple electrodes arranged on an array that is placed precisely over the stomach, a reader to collect the electrode measurements and a smart tablet application to track patient reported symptoms. Participants meeting inclusion and exclusion criteria will continue fasting for 30 minutes after the Gastric Alimetry System has been applied and begun measuring, eat a standard study meal within 10 minutes and remain quietly seated, reclining, for 4 hours as the GAS continues to collect data. The array is removed and the abdomen is examined for evidence of skin effects.

Recruitment information / eligibility

• Status: Enrolling by invitation
• Enrollment: 200
• Est. completion date: December 31, 2024
• Est. primary completion date: December 31, 2024
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

Healthy Population:

• Adults aged 18 years and over

• Able to understand the risks/benefits of the study

• Able to give written informed consent

• No active gastrointestinal symptoms or pathology

• Resides in the Calgary, Alberta area

Patient Population:

• Adults aged 18 years and over

• BMI > 35

• Able to understand the risks/benefits of the study

• Able to give written informed consent

• Patients meeting Rome IV Criteria for functional dyspepsia, or a nausea and vomiting disorder

• Patients with gastroparesis defined on a standardized gastric scintigraphy study

• Resides in the Calgary, Alberta area

Exclusion Criteria:

Healthy Population:

• Under 18 years of age

• BMI > 35

• Taking medications known to affect GI motility or the mid-gut axis (eg antidepressants, anti-anxiety medication, prokinetics, opiates)

• Metabolic, neurogenic, or endocrine disorders known to cause gastrointestinal dysmotility (eg. Multiple Sclerosis, Parkinson's disease, hypothyroidism)

• Known current GI infection (includes H. pylori when being actively treated)

• Known current inflammatory bowel disease

• Known current GI malignancy

• Known GI functional or motility disorders

• Previous gastroduodenal surgery

• GI functional or motility disorders

• Pregnant women

• Open abdominal wounds or abdominal skin not intact (eg rash, abrasions, weeping tissue)

• Fragile skin evidence by high susceptibility to skin tears or skin that bruises and breaks easily

• Allergy to adhesives

• History of allergy or intolerance to ingredients in the meal (nutrient drink, Ensure or similar and Clif bar or similar)

• No vulnerable groups such as; prisoners, individuals with known cognitive impairment, or institutionalised individuals be involved

• Regular cannabis use

• Diagnosed with, or suspected to have life-threatening conditions that could result in immediate danger

Patient Population:

• Under 18 years of age

• BMI > 35

• Metabolic, neurogenic, or endocrine disorders known to cause gastrointestinal dysmotility (eg. Multiple Sclerosis, Parkinson's disease, hypothyroidism)

• Known current GI infection (includes H. pylori when being actively treated)

• Known current inflammatory bowel disease

• Known current GI malignancy

• Previous gastroduodenal surgery

• Open abdominal wounds or abdominal skin not intact (eg rash, abrasions, weeping tissue)

• Fragile skin evidence by high susceptibility to skin tears or skin that bruises and breaks easily

• Allergy to adhesives

• Pregnant women

• History of allergy or intolerance to ingredients in the meal (nutrient drink, Ensure or similar and Clif bar or similar)

• No vulnerable groups such as; prisoners, individuals with known cognitive impairment, or institutionalised individuals be involved

• Regular cannabis use except in the case of CHS

• Diagnosed with, or suspected to have life-threatening conditions that could result in immediate danger

• Inability to remain in a relaxed reclined position for the test duration

Related Conditions & MeSH terms

• Cannabinoid Hyperemesis Syndrome
• Cyclical Vomiting
• Diabetic Gastroparesis
• Dyspepsia
• Functional Dyspepsia
• Gastroparesis
• Motility Disorder
• Vomiting

Intervention

Device:
• Gastric Alimetry System
Gastric Alimetry is a medical device intended to record, store, view and process gastric myoelectrical activity as an aid in the diagnosis of gastrointestinal motility disorders. The device is indicated for use during the diagnostic work-up of patients reporting gastric symptoms, who are suspected of having an underlying gastric motility problem.

Locations

Country	Name	City	State
Canada	University of Calgary	Calgary	Alberta

Sponsors (1)

Lead Sponsor	Collaborator
University of Calgary

Country where clinical trial is conducted

Canada, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Gastric electrical signal frequency	Successful detection of gastric electrical signal in the 2-5 cycle-per-minute (cpm) spectrum as defined by reference ranges at Reliability of 90% and Confidence Interval (CI) of 95%	Pre-meal
Primary	Gastric electrical signal frequency	Successful detection of gastric electrical signal in the 2-5 cycle-per-minute (cpm) spectrum as defined by reference ranges at Reliability of 90% and Confidence Interval (CI) of 95%	Post meal at 1 hour
Primary	Gastric electrical signal frequency	Successful detection of gastric electrical signal in the 2-5 cycle-per-minute (cpm) spectrum as defined by reference ranges at Reliability of 90% and Confidence Interval (CI) of 95%	Post meal at 2 hours
Primary	Gastric electrical signal frequency	Successful detection of gastric electrical signal in the 2-5 cycle-per-minute (cpm) spectrum as defined by reference ranges at Reliability of 90% and Confidence Interval (CI) of 95%	Post meal at 3 hours
Primary	Gastric electrical signal frequency	Successful detection of gastric electrical signal in the 2-5 cycle-per-minute (cpm) spectrum as defined by reference ranges at Reliability of 90% and Confidence Interval (CI) of 95%	Post meal at 4 hours
Primary	Gastric electrical signal amplitude	Estimation of the power of the gastric electrical signal in the above frequency spectrum (µV) at a Reliability of 90% and Confidence Interval (CI) of 95%	Pre-meal
Primary	Gastric electrical signal amplitude	Estimation of the power of the gastric electrical signal in the above frequency spectrum (µV) at a Reliability of 90% and Confidence Interval (CI) of 95%	Post meal at 1 hour
Primary	Gastric electrical signal amplitude	Estimation of the power of the gastric electrical signal in the above frequency spectrum (µV) at a Reliability of 90% and Confidence Interval (CI) of 95%	Post meal at 2 hours
Primary	Gastric electrical signal amplitude	Estimation of the power of the gastric electrical signal in the above frequency spectrum (µV) at a Reliability of 90% and Confidence Interval (CI) of 95%	Post meal at 3 hours
Primary	Gastric electrical signal amplitude	Estimation of the power of the gastric electrical signal in the above frequency spectrum (µV) at a Reliability of 90% and Confidence Interval (CI) of 95%	Post meal at 4 hours
Primary	Safety - abdominal skin effects	Incidence of skin irritation from the electrodes / adhesive, discomfort associated with device wear or removal	After removal of Gastric Alimetry array at approximately 4.2 hours post meal
Primary	Safety - abdominal skin effects	Incidence of skin irritation from the electrodes / adhesive, discomfort associated with device wear or removal	24 hours post study visit
Primary	Safety - abdominal skin effects	Incidence of skin irritation from the electrodes / adhesive, discomfort associated with device wear or removal	7 days post study visit
Primary	Upper Gastric Symptoms - nausea, bloating, upper gut pain, heartburn, stomach burn, excessively full	Self reported assessment of symptoms on a scale of 0-10 with 10 being most severe imaginable	Pre-meal
Primary	Upper Gastric Symptoms - nausea, bloating, upper gut pain, heartburn, stomach burn, excessively full	Self reported assessment of symptoms on a scale of 0-10 with 10 being most severe imaginable	Post meal at 1 hour
Primary	Upper Gastric Symptoms - nausea, bloating, upper gut pain, heartburn, stomach burn, excessively full	Self reported assessment of symptoms on a scale of 0-10 with 10 being most severe imaginable	Post meal at 2 hours
Primary	Upper Gastric Symptoms - nausea, bloating, upper gut pain, heartburn, stomach burn, excessively full	Self reported assessment of symptoms on a scale of 0-10 with 10 being most severe imaginable	Post meal at 3 hours
Primary	Upper Gastric Symptoms - nausea, bloating, upper gut pain, heartburn, stomach burn, excessively full	Self reported assessment of symptoms on a scale of 0-10 with 10 being most severe imaginable	Post meal at 4 hours