Myocardial Scar and Mortality in Severe Aortic Stenosis

Circulation
Tarique A MusaJohn P Greenwood

Abstract

Aortic valve replacement (AVR) for aortic stenosis is timed primarily on the development of symptoms, but late surgery can result in irreversible myocardial dysfunction and additional risk. The aim of this study was to determine whether the presence of focal myocardial scar preoperatively was associated with long-term mortality. In a longitudinal observational outcome study, survival analysis was performed in patients with severe aortic stenosis listed for valve intervention at 6 UK cardiothoracic centers. Patients underwent preprocedural echocardiography (for valve severity assessment) and cardiovascular magnetic resonance for ventricular volumes, function and scar quantification between January 2003 and May 2015. Myocardial scar was categorized into 3 patterns (none, infarct, or noninfarct patterns) and quantified with the full width at half-maximum method as percentage of the left ventricle. All-cause mortality and cardiovascular mortality were tracked for a minimum of 2 years. Six hundred seventy-four patients with severe aortic stenosis (age, 75±14 years; 63% male; aortic valve area, 0.38±0.14 cm2/m2; mean gradient, 46±18 mm Hg; left ventricular ejection fraction, 61.0±16.7%) were included. Scar was present in 51% (18% inf...Continue Reading

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Methods Mentioned

BETA
Surgical Replacement
coronary artery bypass

Clinical Trials Mentioned

NCT01658345
NCT03094143

Software Mentioned

R Foundation for Statistical Computing
REDCap ( Research Electronic Data Capture )
R
AS
CVI42
EVOLVED

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