الفهرس 
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Abstract
Aim of the work
To assess the relationship of serum receptor activator of nuclear factor kappa beta ligand ( s RANKL) and the morbidity and mortality in patients presented with acute heart failure in six and 12 months.
Objectives of the study
1- To evaluate the relationship between serum RANKL level and echocardiography changes in patients with acute heart failure.
2- To correlate the relationship between serum RANKL level and Clinical and laboratory findings as hemoglobin, serum creatine, serum sodium, potassium, ECG changes as cardiac biomarkers.
3- To assess the relationship between serum RANKL and short term mortality and re-hospitalization .