Prognostic Role of Serum Chloride Levels in Acute Decompensated Heart Failure

Justin L. Grodin, Jennifer Simon, Rory Hachamovitch, Yuping Wu, Gregory Jackson, Meghana Halkar, Randall C. Starling, Jeffrey M. Testani, W. H.Wilson Tang

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

Background Acute decompensated heart failure (ADHF) can be complicated by electrolyte abnormalities, but the major focus has been concentrated on the clinical significance of serum sodium levels. Objectives This study sought to determine the prognostic significance of serum chloride levels in relation to serum sodium levels in patients with ADHF. Methods We reviewed 1,318 consecutive patients with chronic heart failure admitted for ADHF to the Cleveland Clinic between July 2008 and December 2013. We also validated our findings in an independent ADHF cohort from the University of Pennsylvania (n = 876). Results Admission serum chloride levels during hospitalization for ADHF were independently and inversely associated with long-term mortality (hazard ratio [HR] per unit change: 0.94; 95% confidence interval [CI]: 0.92 to 0.95; p < 0.001). After multivariable risk adjustment, admission chloride levels remained independently associated with mortality (HR per unit change: 0.93; 95% CI: 0.90 to 0.97; p < 0.001) in contrast to admission sodium levels, which were no longer significant (p > 0.05). Results were similar in the validation cohort in unadjusted (HR per unit change for mortality risk within 1 year: 0.93; 95% CI: 0.91 to 0.95; p < 0.001) and multivariable risk-adjusted analysis (HR per unit change for mortality risk within 1 year: 0.95; 95% CI: 0.92 to 0.99; p = 0.01). Conclusions These observations in a contemporary advanced ADHF cohort suggest that serum chloride levels at admission are independently and inversely associated with mortality. The prognostic value of serum sodium in ADHF was diminished compared with chloride.

Original languageEnglish (US)
Pages (from-to)659-666
Number of pages8
JournalJournal of the American College of Cardiology
Volume66
Issue number6
DOIs
StatePublished - Aug 11 2015

Keywords

  • electrolyte
  • mortality
  • sodium

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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    Grodin, J. L., Simon, J., Hachamovitch, R., Wu, Y., Jackson, G., Halkar, M., Starling, R. C., Testani, J. M., & Tang, W. H. W. (2015). Prognostic Role of Serum Chloride Levels in Acute Decompensated Heart Failure. Journal of the American College of Cardiology, 66(6), 659-666. https://doi.org/10.1016/j.jacc.2015.06.007