Surgical Endoscopy

, Volume 30, Issue 8, pp 3289–3296 | Cite as

Multi-institutional outcomes using magnetic sphincter augmentation versus Nissen fundoplication for chronic gastroesophageal reflux disease

  • Heather F. Warren
  • Jessica L. Reynolds
  • John C. Lipham
  • Joerg Zehetner
  • Nikolai A. Bildzukewicz
  • Paul A. Taiganides
  • Jody Mickley
  • Ralph W. Aye
  • Alexander S. Farivar
  • Brian E. LouieEmail author



Magnetic sphincter augmentation (MSA) has emerged as an alternative surgical treatment of gastroesophageal reflux disease (GERD). The safety and efficacy of MSA has been previously demonstrated, although adequate comparison to Nissen fundoplication (NF) is lacking, and required to validate the role of MSA in GERD management.


A multi-institutional retrospective cohort study of patients with GERD undergoing either MSA or NF. Comparisons were made at 1 year for the overall group and for a propensity-matched group.


A total of 415 patients (201 MSA and 214 NF) underwent surgery. The groups were similar in age, gender, and GERD-HRQL scores but significantly different in preoperative obesity (32 vs. 40 %), dysphagia (27 vs. 39 %), DeMeester scores (34 vs. 39), presence of microscopic Barrett’s (18 vs. 31 %) and hiatal hernia (55 vs. 69 %). At a minimum of 1-year follow-up, 354 patients (169 MSA and 185 NF) had significant improvement in GERD-HRQL scores (pre to post: 21–3 and 19–4). MSA patients had greater ability to belch (96 vs. 69 %) and vomit (95 vs. 43 %) with less gas bloat (47 vs. 59 %). Propensity-matched cases showed similar GERD-HRQL scores and the differences in ability to belch or vomit, and gas bloat persisted in favor of MSA. Mild dysphagia was higher for MSA (44 vs. 32 %). Resumption of daily PPIs was higher for MSA (24 vs. 12, p = 0.02) with similar patient-reported satisfaction rates.


MSA for uncomplicated GERD achieves similar improvements in quality of life and symptomatic relief, with fewer side effects, but lower PPI elimination rates when compared to propensity-matched NF cases. In appropriate candidates, MSA is a valid alternative surgical treatment for GERD management.


Gastroesophageal reflux disease Anti-reflux surgery Multi-institutional Nissen fundoplication Outcomes 



Dr. Heather Warren’s Advanced Gastrointestinal Surgery Fellowship at Swedish Medical Center was supported in part by the Ryan Hill Foundation.

Compliance with ethical standards


Drs. Lipham, Taiganides and Louie have received consulting fees from Torax Medical. Drs. Warren, Reynolds, Zehetner, Bildzukewicz, Aye, and Farivar, and Ms. Mickley have no conflicts of interest or financial ties to disclose.


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Heather F. Warren
    • 1
  • Jessica L. Reynolds
    • 2
  • John C. Lipham
    • 2
  • Joerg Zehetner
    • 2
  • Nikolai A. Bildzukewicz
    • 2
  • Paul A. Taiganides
    • 3
  • Jody Mickley
    • 3
  • Ralph W. Aye
    • 1
  • Alexander S. Farivar
    • 1
  • Brian E. Louie
    • 1
    Email author
  1. 1.Division of Thoracic SurgerySwedish Medical Center and Cancer InstituteSeattleUSA
  2. 2.Division of Upper GI and General SurgeryKeck Medical Center at University of Southern CaliforniaLos AngelesUSA
  3. 3.Knox Community HospitalMount VernonUSA

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