Longitudinal Analysis of Reflux-Related Observations in the Distal Esophagus, Gastric Pouch, and Anastomotic Region at One and Three Years Post-One-Anastomosis Gastric Bypass: Assessing the Diagnostic Precision of Endoscopy Versus Biopsy - Report - MDSpire

Longitudinal Analysis of Reflux-Related Observations in the Distal Esophagus, Gastric Pouch, and Anastomotic Region at One and Three Years Post-One-Anastomosis Gastric Bypass: Assessing the Diagnostic Precision of Endoscopy Versus Biopsy

  • By

  • Mohamed Hany

  • Eman Sheta

  • Walid El Ansari

  • December 18, 2025

  • 0 min

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Longitudinal Analysis of Reflux-Related Observations Post-OAGB

Overview

This study evaluates the diagnostic accuracy of upper endoscopy (UE) versus biopsy for reflux-related abnormalities at one and three years after one-anastomosis gastric bypass (OAGB). Findings indicate significant discrepancies between UE and biopsy results, highlighting the need for careful diagnostic approaches in post-OAGB patients.

Background

The prevalence of obesity and its associated complications necessitate effective surgical interventions like OAGB, which is gaining popularity due to its efficacy in weight loss and health improvement. However, concerns regarding postoperative reflux complications have emerged, prompting the need for reliable diagnostic methods to assess reflux-related conditions in this patient population.

Data Highlights

No numerical data available in the source material.

Key Findings

  • Upper endoscopy (UE) and biopsy were compared for diagnostic accuracy in detecting reflux-related abnormalities post-OAGB.
  • Significant discrepancies were observed between UE findings and biopsy results at one and three years post-surgery.
  • Reflux was reported in a substantial proportion of patients, raising concerns about the long-term outcomes of OAGB.
  • The study emphasizes the importance of individualized surveillance strategies for patients undergoing OAGB.
  • Diagnostic accuracy indices such as sensitivity and specificity were evaluated to determine the reliability of UE compared to biopsy.

Clinical Implications

Clinicians should be aware of the limitations of UE in diagnosing reflux-related conditions post-OAGB and consider the role of biopsy as a reference standard. Individualized follow-up strategies are essential to address the varying risk of reflux and related complications in this patient population.

Conclusion

The study underscores the need for enhanced diagnostic protocols in monitoring reflux after OAGB, given the discrepancies between UE and biopsy findings. Further research is warranted to refine surveillance recommendations and improve patient outcomes.

References

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  6. Experts urge risk-based monitoring as Barrett’s esophagus care moves beyond one-size-fits-all
  7. Primary and Revisional One Anastomosis Gastric Bypass: A Systematic Review and GRADE-Based IFSO Position Statement
  8. Incidence of Bile Reflux in One-Anastomosis Gastric Bypass (OAGB): Variability and Contributing Factors: A Review - Mohamed Ben Amar, Aymen Trigui, Amina Chaka, Mohammad Saad Saumtally, Abderrahmen Masmoudi, Mohamed Ali Chaouch, Rahma Daoud, Rami Zouari, Bart Smet, Gerhard Prager, Mohammad Kermansaravi, 2025

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