Left atrial function measured by cardiac magnetic resonance imaging in patients with heart failure: clinical associations and prognostic value
| Autor: | Christos V. Bourantas, Anil C. Joseph, Pierpaolo Pellicori, Thanjavur Bragadeesh, Jufen Zhang, Andrew L. Clark, Elena I. Lukaschuk, John G.F. Cleland, Huan Loh |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Male
medicine.medical_specialty Interquartile range Cardiac magnetic resonance imaging Internal medicine Atrial Fibrillation Natriuretic Peptide Brain medicine Humans Sinus rhythm Prospective Studies Aged Heart Failure Ejection fraction medicine.diagnostic_test business.industry Atrial fibrillation Stroke Volume Stroke volume Middle Aged medicine.disease Prognosis Peptide Fragments Hospitalization Quartile Heart failure Cardiology Regression Analysis Atrial Function Left Female Cardiology and Cardiovascular Medicine business Biomarkers Magnetic Resonance Angiography |
| Zdroj: | European heart journal. 36(12) |
| ISSN: | 1522-9645 |
| Popis: | Left atrial (LA) volume is an important marker of cardiac dysfunction and cardiovascular outcome in heart failure (HF), but LA function is rarely measured.Left atrial emptying function (LAEF), its clinical associations and prognostic value was studied in outpatients referred with suspected HF who were in sinus rhythm and had cardiac magnetic resonance imaging (CMRI). Heart failure was defined as relevant symptoms and signs with either a left ventricular ejection fraction (LVEF)50% or amino-terminal pro-B-type natriuretic peptide (NTproBNP)400 pg/mL (or125 pg/mL if taking loop diuretics).Of 982 patients, 664 fulfilled the HF criteria and were in sinus rhythm. The median (interquartile range, IQR) LAEF was 42 (31-51)% and 55 (48-61)% in patients with and without HF (P0.001). Patients with HF in the lowest quartile of LAEF (23%; IQR: 17-28%) had lower LV and right ventricular (RV) EF, and greater LV and RV mass and higher plasma NTproBNP than those in the highest quartile of LAEF (56%; IQR: 53-61%). Log[LAEF] and log[NTproBNP] were inversely correlated (r = -0.410, P0.001). During a median follow-up of 883 (IQR: 469-1626) days, 394 (59%) patients with HF died or were admitted with HF and 101 (15%) developed atrial fibrillation (AF). In a multivariable Cox model, increasing LAEF, but not LVEF, was independently associated with survival (HR for 10% change: 0.81 (95%CI: 0.73-0.90), P =0.001). Increasing age and decreasing LAEF predicted incident AF.In patients with HF, LAEF predicts adverse outcome independently of other measures of cardiac dysfunction. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|