Magnetic Sphincter Augmentation
摘要
Gastroesophageal reflux disease (GERD) is prevalent condition associated with heartburn, dysphagia, and regurgitation. It arises from a malfunctioning lower esophageal sphincter (LES) and an abnormal esophageal hiatus or hiatal hernia. The magnetic sphincter augmentation (MSA) device (LINX Reflux Management System, Ethicon, Johnson & Johnson) offers an effective alternative to traditional gastric fundoplication of the esophagus for treating GERD. In addition to serving as an alternative to Nissen fundoplication, the MSA device is particularly valuable for patients who have previously undergone sleeve gastrectomy—a group for whom fundoplication is typically not viable due to the lack of a sufficient gastric fundus. The MSA presents several advantages over the Nissen procedure for the right candidates, including shorter operative and recovery times, the preservation of the ability to belch or vomit, and the reversibility of the device, which can be easily removed without altering gastric anatomy.