Obesity Surgery

, Volume 28, Issue 6, pp 1788–1796 | Cite as

Efficacy and Safety of Stents in the Treatment of Fistula After Bariatric Surgery: a Systematic Review and Meta-analysis

  • Ossamu Okazaki
  • Wanderley M. Bernardo
  • Vitor O. Brunaldi
  • Cesar C. de Clemente Junior
  • Maurício K. Minata
  • Diogo T. H. de Moura
  • Thiago F. de Souza
  • Josemberg Marins Campos
  • Marco Aurélio Santo
  • Eduardo G. H. de Moura
Review Article


Fistula development is a serious complication after bariatric surgery. We performed a systematic review and meta-analysis to assess the efficacy of fistula closure and complications associated with endoscopic stent treatment of fistulas, developed after bariatric surgeries, particularly Roux-en-Y gastric bypass (RYGB) and gastric sleeve (GS). Studies involving patients with fistula after RYGB or GS and those who received stent treatment only were selected. The analyzed outcomes were overall success rate of fistula closure, mean number of stents per patient, mean stent dwelling time, and procedure-associated complications. Current evidence from identified studies demonstrates that, in selected patients, endoscopic stent treatment of fistulas after GS or RYGB can be safe and effective.


Sleeve Bypass Bariatric Stent Fistula 


Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.

Ethical Approval Statement

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed Consent Statement

Informed consent does not apply for this study.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Ossamu Okazaki
    • 1
  • Wanderley M. Bernardo
    • 1
  • Vitor O. Brunaldi
    • 1
  • Cesar C. de Clemente Junior
    • 1
  • Maurício K. Minata
    • 1
  • Diogo T. H. de Moura
    • 1
  • Thiago F. de Souza
    • 1
  • Josemberg Marins Campos
    • 2
  • Marco Aurélio Santo
    • 3
  • Eduardo G. H. de Moura
    • 1
  1. 1.Gastrointestinal Endoscopy Unit, Hospital das ClinicasUniversity of São Paulo Medical SchoolSão PauloBrazil
  2. 2.Department of SurgeryUniversity of PernambucoRecifeBrazil
  3. 3.Bariatric and Metabolic Surgery Unit, Hospital das ClinicasUniversity of Sao Paulo Medical SchoolSão PauloBrazil

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