The Difference of Reflux Pattern Between the Patients Who Have Postprandial Reflux Symptoms

Study Overview
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Brief Summary
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Gastroesophageal reflux disease is increasing worldwide. The causes of reflux symptoms are not found exactly. especially, the postprandial reflux symptoms are more common than the all day reflux symptoms. One of the causes of reflux symptoms is the relaxation of the lower sphincter of the esophagus. But, the sphincter relaxation also occur in normal people. But, there is a difference in postprandial reflux pattens between the patients and the normal people. So, in this study, we want to compare the difference of reflux pattern between the patients who have postprandial reflux symptoms and normal people though the 24hr pH monitoring.

Conditions
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Gastroesophageal Reflux Disease

Intervention / Treatment
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* Device: 24hr pH monitoring


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: over 19 years old, male and female normal people (control group, who has no postprandial reflux symptoms patients who have postprandial reflux symptoms (postprandial reflux symptom means that within the last 6 months, postprandial reflux symptoms more than once a week for more than 1 month) Exclusion Criteria: patients who have nasoesophageal stricture patients who have bleeding tendency patients who have esophageal varix patients who have cardioverter implantation patients who had surgery for esophagus, stomach or duodenum patients who are taking medications, gastrointestinal motility drugs

Ages Eligible for Study
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Minimum Age: 19 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: postprandial reflux group<br>Esophageal pH monitoring is the current gold standard for diagnosis of gastroesophageal reflux disease. It provides direct physiologic measurement of acid in the esophagus and is the most objective method to document reflux disease, assess the severity of the disease and monitor the reflux acidity. | Device: 24hr pH monitoring<br> <br> |
| Other: normal group<br>Esophageal pH monitoring is the current gold standard for diagnosis of gastroesophageal reflux disease. It provides direct physiologic measurement of acid in the esophagus and is the most objective method to document reflux disease, assess the severity of the disease and monitor the reflux acidity. | Device: 24hr pH monitoring<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The difference of reflux pattern at postprandial period between the patients who have postprandial reflux symptoms and the normal people | Primary Outcome - The difference of reflux pattern at postprandial period between the patients who have postprandial reflux symptoms and the normal people The postprandial reflux symptom means that the symptoms more than once for a week for more than 1 month | Within the 24 hours after the 24hr pH monitoring | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The difference of esophageal reflux pH between the patients who have postprandial reflux symptoms and the normal people |  | Within the 24 hours after the 24hr pH monitoring |