Endoscopic Dilation of Bariatric RNY Anastomotic Strictures: a Systematic Review and Meta-analysis

Alexandra J. Baumann, Lazarus Katana Mramba, Russell B. Hawkins, Anne Marie Carpenter, Max S. Fleisher, Alexander L. Ayzengart, David S. Estores*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

11 Scopus citations


Gastrojejunostomy anastomotic strictures are a complication of Roux-en-Y gastric bypass surgery without an established treatment guideline. A systematic review and meta-analysis were performed to determine the safety and efficacy of endoscopic dilation in their management. PubMed, Web of Science, and Cochrane Central (1994–2017) were searched. Data was analyzed with random effects meta-analysis and mixed effects meta-regression. Twenty-one observational studies (896 patients) were included. The stricture rate for laparoscopic patients was 6% (95% CI, 5–9%). Only 38% (95% CI, 30–47%) required greater than one dilation. Symptom improvement occurred in 97% (95% CI, 94–98%). The complication rate was 4% (95% CI, 3–6%). Endoscopic dilation of GJA strictures is safe, effective, and sustaining. This study can guide endoscopists in the treatment of a common bariatric surgical complication.

Original languageEnglish (US)
Pages (from-to)4053-4063
Number of pages11
JournalObesity Surgery
Issue number12
StatePublished - Dec 1 2018
Externally publishedYes


  • Adults
  • Anastomosis, Roux-en-Y
  • Anastomosis, surgical/adverse effects
  • Constriction, Pathologic/etiology/therapy
  • Endoscopy, gastrointestinal
  • Humans

ASJC Scopus subject areas

  • Surgery
  • Endocrinology, Diabetes and Metabolism
  • Nutrition and Dietetics


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