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Commentary on ‘‘Quantifying Factors Essential to the Integrity of the Esophagogastric Junction During Antireflux Procedures’’ D r. Zarnegar and his colleagues are to be commended for their work described in the manuscript entitled ‘‘Quantifying factors essential to the integrity of the esophagogastric junction during anti-reflux procedures.’’ They utilized a relatively new diagnostic tool, the Endo-FLIP (functional luminal imaging planimetry probe), to measure distensibility (compliance), cross-sectional area and length of the high-pressure zone at the esophagogastric junction (EGJ) intraoperatively. The Endo-FLIP device has previously been used primarily to assess the distensibility of the EGJ in patients with EGJ outlet obstruction, such as achalasia. In this study, measurements were performed at various stages of the performance of robotic assisted laparoscopic hiatal hernia repairs and antireflux operations in 100 consecutive patients. The measurements were performed with standardized insufflation volmes and pneumoperitoneum pressures after surgical management of reflux. There is little [email protected] u