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Hyponatremia and long-term outcomes in chronic heart failure--an observational study from the Duke Databank for Cardiovascular Diseases.
- Source :
-
Journal of cardiac failure [J Card Fail] 2012 Jan; Vol. 18 (1), pp. 74-81. Date of Electronic Publication: 2011 Oct 19. - Publication Year :
- 2012
-
Abstract
- Background: Hyponatremia is a well known predictor of short-term outcomes in heart failure (HF); however, its impact on long-term survival in HF patients with systolic dysfunction is not well established.<br />Methods and Results: Using the Duke Databank for Cardiovascular Diseases, we identified 1,045 patients with HF and systolic dysfunction undergoing cardiac catheterization from January 2000 through December 2008. The effect of hyponatremia as independent predictor of all-cause death and cardiovascular death/rehospitalization was examined using a multivariable Cox proportional regression model. Hyponatremia was present in 107/1,045 patients (10.2%). Hyponatremic patients were older, more likely to be anemic, with higher heart rate and levels of blood urea nitrogen, lower blood pressure, and more severe HF. Using an unadjusted analysis, hyponatremia was associated with higher risk of all-cause death (hazard ratio [HR] 1.89, 95% confidence interval [CI] 1.44-2.49; P < .0001) and of cardiovascular death/rehospitalization (HR 1.40, 95% CI 1.11-1.77; P = .005) at 4.5 years. When entered into a multivariable Cox model, hyponatremia remained significant for all-cause death (HR 1.42, 95% CI 1.07-1.88) and for cardiovascular death/rehospitalization (HR 1.45, 95% CI 1.14-1.86).<br />Conclusions: Hyponatremia is relatively common in HF patients with LV dysfunction and is independently associated with increased risk of all-cause mortality and cardiovascular mortality/rehospitalization.<br /> (Copyright © 2012 Elsevier Inc. All rights reserved.)
- Subjects :
- Aged
Cardiac Catheterization
Chronic Disease
Cohort Studies
Databases, Factual
Female
Heart Failure complications
Heart Failure physiopathology
Hospitalization
Humans
Hyponatremia physiopathology
Male
Middle Aged
North Carolina
Proportional Hazards Models
Severity of Illness Index
Survival Analysis
Ventricular Dysfunction, Left physiopathology
Heart Failure mortality
Hyponatremia complications
Subjects
Details
- Language :
- English
- ISSN :
- 1532-8414
- Volume :
- 18
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Journal of cardiac failure
- Publication Type :
- Academic Journal
- Accession number :
- 22196845
- Full Text :
- https://doi.org/10.1016/j.cardfail.2011.09.005