Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Observational
Official Title: Effects of Position and a Test Meal on Esophago-gastric Junction Morphology and Function Assessed by High-resolution Impedance Manometry (HRM)
Brief Summary: Retrospective analysis for HRM measurements using liquid swallows and a test meal for the presence of hiatal hernia. The investigators will correlate hernia descriptions with presence of acidic reflux and clinical complaints.