Severe Dysphagia is Rare After Magnetic Sphincter Augmentation

Area of Science:

• Gastroenterology
• Surgical Innovation
• Medical Device Technology

Background:

• Dysphagia is a significant concern following anti-reflux surgery, including magnetic sphincter augmentation (MSA).
• Evaluating postoperative dysphagia rates, risk factors, and management is crucial for optimizing patient outcomes after MSA.

Purpose of the Study:

• To assess the incidence and characteristics of dysphagia after magnetic sphincter augmentation.
• To identify patient-specific and surgical factors associated with postoperative dysphagia.
• To evaluate the long-term efficacy and safety of magnetic sphincter augmentation for GERD treatment.

Main Methods:

• A retrospective analysis of 268 patients who underwent magnetic sphincter augmentation (MSA) from a prospectively collected database of 357 patients.
• Evaluation of postoperative dysphagia scores, gastrointestinal symptoms, PPI use, GERD-HRQL, and swallow imaging.
• Multivariable logistic regression analysis to identify risk factors for postoperative dysphagia.

Main Results:

• At a median follow-up of 23 months, severe dysphagia was absent. Only 1% required endoscopic dilatation and 1% conservative treatment.
• LINX® devices with a size ≤13 were identified as the sole factor associated with postoperative dysphagia (OR 5.90).
• Significant improvement in GERD-HRQL scores (2 vs. 19, p=0.001) and resolution of heartburn, regurgitation, and respiratory symptoms were observed.

Conclusions:

• Dysphagia requiring intervention is infrequent after magnetic sphincter augmentation (MSA).
• Smaller LINX® device size (<13) is an independent risk factor for developing postoperative dysphagia.
• Magnetic sphincter augmentation demonstrates favorable safety and efficacy in managing GERD symptoms.