Stomach 'EKG' could spot hidden gut problems

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

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