AI Article Synopsis
- High serum uric acid (SUA) levels are linked to increased mortality risk in the general population and chronic kidney disease patients, but findings in dialysis patients are mixed, with low SUA possibly indicating poor nutrition.* -
- A study of 16,057 hemodialysis patients showed a U-shaped relationship between SUA levels and all-cause mortality, with the lowest death risk at a SUA level of 6.5 mg/dl.* -
- This U-shaped association remains consistent regardless of body composition indicators, such as lean and fat tissue indices.*
Article Abstract
Introduction: Although high serum uric acid (SUA) has been consistently associated with an increased risk of death in the general population and in persons with nondialysis chronic kidney disease (CKD), studies in patients undergoing dialysis are conflicting. It has been postulated that low SUA simply reflects poor nutritional status in dialysis patients. We here characterize the association between SUA and the risk of death in a large dialysis cohort and explore effect modification by underlying nutritional status as reflected by body composition.
Methods: In this retrospective cohort study, we included 16,057 hemodialysis (HD) patients treated during 2007 to 2016 in NephroCare centers as recorded in the European Clinical Database (EuCliD). The association between SUA, all-cause, and cardiovascular (CV)-related mortality was evaluated with competing risk models and characterized with splines. Effect modification was explored by lean tissue index (LTI) and fat tissue index (FTI).
Results: During a mean of 1.8 years of follow-up, 2791 patients (17.4%) died. We found a multivariable-adjusted U-shaped pattern between SUA and all-cause mortality. Patients with SUA levels of 6.5 mg/dl (387 μmol/l) were at the lowest risk of death (subdistribution hazard ratio = 0.94 [confidence interval {CI} 0.91; 0.96]). The form of association was not meaningfully affected by underlying LTI and FTI.
Conclusion: We found a U-shaped pattern between SUA levels and all-cause mortality among HD patients, which was independent of the patients' body composition.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7403560 | PMC |
| http://dx.doi.org/10.1016/j.ekir.2020.05.021 | DOI Listing |
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