Clinical Implications of Serum Biomarkers of Cardiac Stress in Aortic Stenosis

Purpose of Review: The purpose of this review is to outline the relationship between serum biomarkers of cardiac stress and the pathophysiologic progression of aortic stenosis, to identify studies exploring the utility of biomarkers in the risk stratification and management of patients with aortic stenosis, and to highlight the biomarkers most practical to management of patients with aortic stenosis. Recent Findings: Several biomarkers have been identified that reflect various aspects of the pathogenesis of calcific aortic stenosis, subsequent hemodynamic obstruction leading to myocardial remodeling, oxidative stress and injury, and concomitant systemic inflammation. These markers are associated with adverse outcomes in aortic stenosis and offer incremental value in risk prediction over traditional clinical assessment for aortic stenosis. NTproBNP and troponin are the most rigorously studied serum biomarkers in aortic stenosis, and only NTproBNP is currently reflected in any major guideline on aortic stenosis management. Summary: Serum biomarkers show promise in guiding management of aortic stenosis, but still require significant prospective investigation before they can be incorporated in major guidelines.