Red cell distribution width as a novel prognostic marker in heart failure: data from the CHARM Program and the Duke Databank

• OBJECTIVES: The goal of this study was to identify potentially novel laboratory markers of risk in chronic heart failure patients. BACKGROUND: Although a variety of prognostic markers have been described in heart failure, a systematic assessment of routine laboratory values has not been reported. METHODS: All 2,679 symptomatic chronic heart failure patients from the North American CHARM (Candesartan in Heart Failure: Assessment of Reduction in Mortality and Morbidity) program had a wide range of laboratory measures performed at a core facility, enabling us to assess the relationship between routine blood tests and outcomes using a Cox proportional hazards model. We then replicated our findings in a cohort of 2,140 heart failure patients from the Duke Databank. RESULTS: Among 36 laboratory values considered in the CHARM program, higher red cell distribution width (RDW) showed the greatest association with morbidity and mortality (adjusted hazard ratio 1.17 per 1-SD increase, p < 0.001). Higher RDW was among the most powerful overall predictors, with only age and cardiomegaly showing a better independent association with outcome. This finding was replicated in the Duke Databank, in which higher RDW was strongly associated with all-cause mortality (adjusted hazard ratio 1.29 per 1 SD, p < 0.001), second only to age as a predictor of outcome. CONCLUSIONS: In 2 large contemporary heart failure populations, RDW was found to be a very strong independent predictor of morbidity and mortality. Understanding how and why this marker is associated with outcome may provide novel insights into heart failure pathophysiology.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Kardiologi (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Cardiac and Cardiovascular Systems (hsv//eng)

Nyckelord

Aged

Benzimidazoles/*therapeutic use

Biological Markers/blood

*Cause of Death

Cohort Studies

Databases as Topic

Disease Progression

Erythrocytes/*cytology

Female

Heart Failure/diagnosis/*drug therapy/*mortality

Humans

Male

Middle Aged

Multivariate Analysis

Probability

Prognosis

Proportional Hazards Models

Randomized Controlled Trials as Topic

Risk Assessment

Sensitivity and Specificity

Severity of Illness Index

Survival Analysis

Tetrazoles/*therapeutic use

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)