Abstract: SA-PO0491
Stage-Dependent Associations Between Bariatric Surgery and CKD Outcomes
Session Information
- CKM: Clinical - Screening, Population Management, Care Disparities, and Patient-Centered Outcomes
October 24, 2026 | Location: Exhibit Hall A, Convention Center
Abstract Time: 10:00 AM - 12:00 PM
Category: Cardiovascular-Kidney-Metabolic Health
- 602 Cardiovascular-Kidney-Metabolic Health: Clinical
Authors
- Tai, Brent, BayCare Health System, Clearwater, Florida, United States
- Mittal, Ajay, BayCare Health System, Clearwater, Florida, United States
- D'Cunha, Prakas Thomas, BayCare Health System, Clearwater, Florida, United States
Background
Bariatric surgery improves obesity-related metabolic risk factors linked to chronic kidney disease (CKD). We evaluated stage-specific associations between prior bariatric surgery and CKD outcomes.
Methods
Retrospective cross-sectional study using 2022 National Inpatient Sample. Adult admissions categorized by prior bariatric surgery. Outcomes: any CKD, CKD stage 3, CKD stages 4–5, and ESRD. Multivariable logistic regression estimated adjusted odds ratios (aORs). Interaction and sensitivity analyses included obesity, diabetes, IPTW, and propensity matching.
Results
Among 6.58M admissions, 66,776 (1.0%) had prior bariatric surgery. Bariatric surgery was associated with lower odds of CKD stages 4–5 (aOR 0.74, 95% CI 0.63–0.86), but not CKD stage 3 or ESRD. Associations were strongest among patients with obesity (aOR 0.70) and diabetes (aOR 0.69). Findings were consistent across secondary analyses.
Conclusion
Bariatric surgery was associated with lower odds of advanced CKD, particularly among metabolically high-risk populations, supporting further study of metabolic surgery and CKD progression.
Acknowledgment
We wanted to acknowledge all the HCUP Data Partners that contribute to HCUP. A link to the HCUP-US web page that contains the list of State organizations is here. (hcup-us.ahrq.gov/db/hcupdatapartners.jsp).
Prior Bariatric Surgery and CKD Outcomes
| Outcome | Crude OR (95% CI) | p-value | Adjusted OR (95% CI) | p-value |
| CKD (any) | 0.86 (0.84–0.88) | <0.001 | 0.92 (0.87–0.98) | 0.010 |
| CKD stage 3 | 0.88 (0.85–0.91) | <0.001 | 1.02 (0.95–1.10) | 0.587 |
| CKD stage 4-5 | 0.71 (0.67–0.76) | <0.001 | 0.74 (0.63–0.86) | <0.001 |
| ESRD | 0.84 (0.80–0.88) | <0.001 | 0.92 (0.81–1.04) | 0.186 |