Association between serum sodium and 28-day mortality in sepsis patients: A secondary data analysis from three large critical illness cohorts
THERAPEUTIC APHERESIS AND DIALYSIS(2024)
Abstract
Objective: The present study was designed to explore the association between serum sodium and mortality in patients with sepsis by using a large sample, multicenter MIMIC-IV database.Methods: We extracted the data of 34 925 sepsis patients from the retrospective cohort mimicIV database. After adjusting the confounders, we explored the independent effects of serum sodium on 28-day mortality.Results: A nonlinear relationship existed between serum sodium and 28-day mortality, of which a negative association was found between serum sodium and 28-day mortality (odds ratio: 0.95, 95% CI: 0.94, 0.96, p = 0.0001) when serum sodium was in 102 mmol/L to 138 mmol/L, but a positive correlation appeared when sodium climbed to the range of 140-179 mmol/L (odds ratio: 1.04, 95% CI: 1.03-1.06, p = 0.0001).Conclusions: Both lower and higher serum sodium levels are associated with an increased risk of death in sepsis patients.
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Key words
28-day mortality,sepsis,serum sodium
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