Abstract
Purpose
Obesity is a major risk factor for end-stage kidney disease (ESKD) and is often a barrier to kidney transplantation. However, limited evidence exists evaluating postoperative bariatric surgery outcomes in patients with chronic kidney disease (CKD) and ESKD.
Materials and Methods
We performed a retrospective cohort study of patients who underwent bariatric surgery in 2015–2016 using the national Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program dataset. Propensity score matching was used to balance characteristics across patients with CKD and ESKD vs. those without CKD.
Results
There were 323,034 patients without CKD, 1694 patients with CKD, and 925 patients with ESKD who underwent bariatric surgery. Patients with CKD and ESKD had a significantly increased risk of 30-day reoperation (CKD odds ratio [OR] 2.25 95% confidence interval [CI] 1.45–3.51; ESKD OR 3.10, 95% CI 1.72–5.61) and readmission (CKD OR 1.98, 95% CI 1.53–2.56; ESKD OR 2.97, 95% CI 2.05–4.31) compared to patients without CKD; mortality risk was elevated in patients with ESKD (OR 11.59, 95% CI 6.71–20.04) but not in those with CKD (OR 1.00, 95% CI 0.32–3.11). Rates of adverse outcomes were < 15% across all groups. There were 12, 50, and 172 deaths per 1000 person-years among patients without CKD, with CKD, and with ESKD, respectively.
Conclusion
Patients with CKD and ESKD experienced higher risk of postbariatric surgery complications compared to those without kidney disease, although absolute complication rates were low across all groups. CKD and ESKD should not be perceived as contraindications to bariatric surgery.
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Acknowledgements
The ACS MBSAQIP and the centers participating in the ACS MBSAQIP are the source of the data used herein; they have not verified and are not responsible for the statistical validity of the data analysis or the conclusions derived by the authors.
Grant Information
This research was supported in part by the National Institutes of Health grant number K23-HL133843 (NHLBI, PI: Cohen). The interpretation and reporting of these data are the responsibility of the authors and in no way should be seen as an official policy of or interpretation by the National Institutes of Health.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study, formal consent is not required.
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Cohen, J.B., Tewksbury, C.M., Torres Landa, S. et al. National Postoperative Bariatric Surgery Outcomes in Patients with Chronic Kidney Disease and End-Stage Kidney Disease. OBES SURG 29, 975–982 (2019). https://doi.org/10.1007/s11695-018-3604-2
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DOI: https://doi.org/10.1007/s11695-018-3604-2