National Outcomes of Cardiac Surgery in Patients with History of Bariatric Surgery
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By
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March 18, 2026
Objective:
To analyze the association between metabolic and bariatric surgery (MBS) and outcomes in patients undergoing specific types of cardiovascular surgery, focusing on hospital morbidity and mortality, and to assess the effect of obesity class on these outcomes.
Key Findings:
- Patients with MBS had lower in-hospital mortality (0.9% vs. 1.7%, P=.03), indicating a significant difference.
- Patients with MBS experienced fewer complications overall (20% vs. 25%, P <.001), including pneumonia (4.2% vs. 6.9%, P <.001), respiratory failure (8.4% vs. 11%, P =.003), and infectious complications (1.2% vs. 2.0%, P=.03).
- In patients with class 3 obesity, those with MBS had significantly fewer pneumonia cases (2.6% vs. 7.6%, P<.001) and infections (1.2% vs. 4.5%, P=.003).
Interpretation:
MBS is associated with improved in-hospital outcomes for patients undergoing cardiovascular surgery, particularly in those with class 3 obesity.
Limitations:
- The study is retrospective and relies on administrative data, which may have inaccuracies that could affect the results.
- Exclusion of patients with nutritional deficiencies and certain age groups may limit the generalizability of the findings to the broader population.
Conclusion:
Patients with a history of MBS show significantly better outcomes in terms of mortality and complications after cardiovascular surgery, highlighting the potential benefits of MBS in this population and suggesting a need for increased consideration of MBS in eligible patients.
