• Clin. Gastroenterol. Hepatol. · May 2016

    Multicenter Study Clinical Trial

    Long-term Outcomes of Patients Receiving a Magnetic Sphincter Augmentation Device for Gastroesophageal Reflux.

    • Robert A Ganz, Steven A Edmundowicz, Paul A Taiganides, John C Lipham, C Daniel Smith, Kenneth R DeVault, Santiago Horgan, Garth Jacobsen, James D Luketich, Christopher C Smith, Steven C Schlack-Haerer, Shanu N Kothari, Christy M Dunst, Thomas J Watson, Jeffrey Peters, Brant K Oelschlager, Kyle A Perry, Scott Melvin, Willem A Bemelman, André J P M Smout, and Dan Dunn.
    • Minnesota Gastroenterology PA, Plymouth, Minnesota. Electronic address: rganz@mngastro.com.
    • Clin. Gastroenterol. Hepatol. 2016 May 1; 14 (5): 671-7.

    Background & AimsBased on results from year 2 of a 5-year trial, in 2012 the US Food and Drug Administration approved the use of a magnetic device to augment lower esophageal sphincter function in patients with gastroesophageal reflux disease (GERD). We report the final results of 5 years of follow-up evaluation of patients who received this device.MethodsWe performed a prospective study of the safety and efficacy of a magnetic device in 100 adults with GERD for 6 months or more, who were partially responsive to daily proton pump inhibitors (PPIs) and had evidence of pathologic esophageal acid exposure, at 14 centers in the United States and The Netherlands. The magnetic device was placed using standard laparoscopic tools and techniques. Eighty-five subjects were followed up for 5 years to evaluate quality of life, reflux control, use of PPIs, and side effects. The GERD-health-related quality of life (GERD-HRQL) questionnaire was administered at baseline to patients on and off PPIs, and after placement of the device; patients served as their own controls. A partial response to PPIs was defined as a GERD-HRQL score of 10 or less on PPIs and a score of 15 or higher off PPIs, or a 6-point or more improvement when scores on vs off PPI were compared.ResultsOver the follow-up period, no device erosions, migrations, or malfunctions occurred. At baseline, the median GERD-HRQL scores were 27 in patients not taking PPIs and 11 in patients on PPIs; 5 years after device placement this score decreased to 4. All patients used PPIs at baseline; this value decreased to 15.3% at 5 years. Moderate or severe regurgitation occurred in 57% of subjects at baseline, but only 1.2% at 5 years. All patients reported the ability to belch and vomit if needed. Bothersome dysphagia was present in 5% at baseline and in 6% at 5 years. Bothersome gas-bloat was present in 52% at baseline and decreased to 8.3% at 5 years.ConclusionsAugmentation of the lower esophageal sphincter with a magnetic device provides significant and sustained control of reflux, with minimal side effects or complications. No new safety risks emerged over a 5-year follow-up period. These findings validate the long-term safety and efficacy of the magnetic sphincter augmentation device for patients with GERD. ClinicalTrials.gov no: NCT00776997.Copyright © 2016 AGA Institute. Published by Elsevier Inc. All rights reserved.

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