Upper GI MM vs Manometry

Research will consist of retrospective review of prospective cohort quantitative data collection with the goal of comparing preoperative High-Resolution Manometry (HRM) results to Upper Gastrointestinal Marshmallow (UGIMM) results, in the patient undergoing preoperative esophageal motility assessment. The aim of this study is to establish a correlation between HRM and UGIMM studies in order to create a clinically supported gold standard measurement for preoperative esophageal motility assessment. Research will examine the level of reliability and variability of the esophageal motility assessment conducted utilizing HRM and the UGIMM study. Standards of testing and current practice guidelines will be reviewed and compared for correlations in procedure outcomes. Research seeks to accomplish validation and strengthening of current practices related to the use and interpretation of HRM and UGIMM study results as a valid postoperative outcome predictor.