Association Between Edmonton Obesity Staging System Severity and 90-Day Postoperative Complications After Primary Metabolic and Bariatric Surgery: A Retrospective Cohort Study

By
Anna Carolina Batista Dantas
Denis Pajecki
Priscila Caproni
Beatriz Helena Tess
Marco Aurelio Santo
June 3, 2026
0 min

Obesity Surgery

Objective:

To evaluate the association between Edmonton Obesity Staging System (EOSS) severity and 90-day postoperative complications following metabolic and bariatric surgery (MBS) in a cohort with a high prevalence of advanced-stage disease.

Key Findings:

The study found an association between higher EOSS severity and increased rates of postoperative complications within 90 days after MBS.
Patients classified as EOSS stage 3 or 4 experienced significantly higher complication rates compared to those in lower stages.

Interpretation:

Limitations:

The study is retrospective, which may introduce biases in data collection and analysis.
The sample size of patients classified as EOSS stage 3 and 4 was limited, potentially affecting the robustness of the findings.

Association Between Edmonton Obesity Staging System Severity and 90-Day Postoperative Complications After Primary Metabolic and Bariatric Surgery: A Retrospective Cohort Study

Objective:

Key Findings:

Interpretation:

Limitations:

Conclusion:

Original Source(s)

Association Between Edmonton Obesity Staging System Severity and 90-Day Postoperative Complications After Primary Metabolic and Bariatric Surgery: A Retrospective Cohort Study

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