JACC. Cardiovascular imaging
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JACC Cardiovasc Imaging · Jul 2018
Multicenter StudyB-Type Natriuretic Peptide and High-Sensitivity Cardiac Troponin for Risk Stratification in Low-Flow, Low-Gradient Aortic Stenosis: A Substudy of the TOPAS Study.
The objective of this study was to determine the prognostic value of combined measures of B-type natriuretic peptide (BNP) and high-sensitivity cardiac troponin T (hsTnT) in patients with low-flow, low-gradient aortic stenosis (LF-LG AS) who had either a preserved or reduced left ventricular ejection fraction (LVEF). ⋯ This study demonstrated the usefulness of combined measures of BNP and hsTnT to enhance risk stratification in patients with LF-LG AS. Patients with elevation of both BNP and hsTnT had a markedly increased risk of mortality. (Multicenter Prospective Study of Low-Flow Low-Gradient Aortic Stenosis [TOPAS]; NCT01835028).
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JACC Cardiovasc Imaging · Jul 2018
Comparative StudyEarly Prosthetic Valve Dysfunction Due to Bioprosthetic Valve Thrombosis: The Role of Echocardiography.
The purpose of this study was to review the institutional practice of surveillance transthoracic echocardiography (TTE) for diagnosing early prosthetic valve dysfunction (PVD). ⋯ Most patients with PVD due to BPVT were asymptomatic at initial diagnosis, which was made based on routine surveillance TTE, often performed before 5 years. BPVT, an acute disease process, requires timely diagnosis because patient conditions rapidly deteriorate. Further studies are needed to determine whether routine surveillance TTE should be considered for patients with bioprosthetic valves to identify pre-symptomatic features of BPVT in order to provide effective, appropriate therapy.