Fatigue as a predictor of outcome in patients with heart failure. Analysis of CORONA (Controlled rosuvastatin multinational trial in heart failure)

• Objectives: The purpose of this study was to examine the relationship between fatigue and clinical outcomes, using dyspnea as a comparator, in patients with left ventricular ejection fraction (LVEF)≤35% enrolled in the CORONA (Controlled Rosuvastatin Multinational Trial in Heart Failure) study. Background: Although fatigue is a common symptom in heart failure (HF), little is known about its association with prognosis. Methods: At baseline in CORONA, fatigue "during the past few days" was measured using a 5-point exertion scale (0= none, 1= heavy exertion, 2= moderate exertion, 3= slight exertion, 4= rest); a 4-point scale was used for dyspnea (1to4 as for fatigue). Patients were grouped into 3 categories: a fatigue score 0 to 1 (n= 535), fatigue score 2(n=1,632), and fatigue score 3 to 4 (n= 1,663); and a dyspnea score of 1 (n= 292), dyspnea score of 2(n=1,695), and dyspnea score of 3 to 4 (n= 1,843). The association between fatigue and dyspnea and the composite outcome of cardiovascular (CV) death or HF hospital stay and each component separately was examined using Kaplan-Meier analysis and Cox proportional-hazard models. We also examined all-cause mortality. Results: In univariate analyses, symptom severity was associated with a higher risk of CV death or HF hospital stay (fatigue: group 3, 49% [n= 810], vs. group 1, 30% [n= 160]; dyspnea: group 3, 50% [n= 918], vs. group 1, 28% [n= 82]) and all-cause mortality (fatigue: group 3, 38% [n= 623], vs. group 1, 24% [n= 130]; dyspnea: group 3, 38% [n=697], vs. group 1, 23% [n= 66], log-rank p< 0.0001 for all). After adjusting for other prognostic variables, including LVEF, New York Heart Association class, and N-terminal pro-B-type natriuretic peptide level, worse fatigue remained associated with higher risk of HF hospital stay but not mortality (worse dyspnea remained associated with a higher risk of both). An increase in fatigue (or dyspnea) between baseline and 6 months was also associated with worse outcomes. Conclusions: In HF, greater fatigue is associated with worse clinical outcomes. Closer attention should be paid to this symptom in clinical practice, with more done to standardize its measurement and understand its origins, with a view to improving treatment. © 2014 American College of Cardiology Foundation.

Ämnesord

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

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

Nyckelord

Dyspnea

Fatigue

Heart failure

Outcomes

Symptoms

amino terminal pro brain natriuretic peptide

placebo

rosuvastatin

fluorobenzene

hydroxymethylglutaryl coenzyme A reductase inhibitor

pyrimidine derivative

sulfonamide

aged

article

cardiovascular mortality

controlled study

disease association

disease severity

female

heart left ventricle ejection fraction

human

length of stay

major clinical study

male

outcome assessment

priority journal

prognosis

randomized controlled trial (topic)

risk assessment

clinical trial

complication

heart stroke volume

hospitalization

middle aged

multicenter study

pathophysiology

physiology

randomized controlled trial

treatment outcome

Fluorobenzenes

Humans

Hydroxymethylglutaryl-CoA Reductase Inhibitors

Pyrimidines

Stroke Volume

Sulfonamides

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)