Indexing aortic valve area by body surface area increases the prevalence of severe aortic stenosis
نویسندگان
چکیده
منابع مشابه
Indexing aortic valve area by body surface area increases the prevalence of severe aortic stenosis.
BACKGROUND To account for differences in body size in patients with aortic stenosis, aortic valve area (AVA) is divided by body surface area (BSA) to calculate indexed AVA (AVAindex). Cut-off values for severe stenosis are <1.0 cm2 for AVA and <0.6 cm2/m2 for AVAindex. OBJECTIVE To investigate the influence of indexation on the prevalence of severe aortic stenosis and on the predictive accura...
متن کاملPrognostic Value of Aortic Valve Area by Doppler Echocardiography in Patients With Severe Asymptomatic Aortic Stenosis
BACKGROUND The aim of this study was to evaluate the relationship between aortic valve area (AVA) obtained by Doppler echocardiography and outcome in patients with severe asymptomatic aortic stenosis and to define a specific threshold of AVA for identifying asymptomatic patients at very high risk based on their clinical outcome. METHODS AND RESULTS We included 199 patients with asymptomatic s...
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OBJECTIVES This study sought to assess the diagnostic impact of stress echocardiography (SE) in patients with suspected low-flow, low-gradient aortic stenosis but normal resting transvalvular flow rate. BACKGROUND SE may help to distinguish between true severe aortic stenosis and pseudosevere aortic stenosis in patients with low aortic valve area (AVA) and mean gradient. However, if rest flow...
متن کاملOutcome Implication of Aortic Valve Area Normalized to Body Size in Asymptomatic Aortic Stenosis.
BACKGROUND Current guidelines define severe aortic stenosis in patients with aortic valve area normalized to body surface area (AVA/BSA) <0.6 cm2/m2; yet, this cutoff has never been validated. Moreover, it is not known whether AVA normalization to other body size indexes allows improved outcome prediction. We aim to test the value of AVA normalized to body size for outcome prediction in asympto...
متن کاملStenotic Aortic Valve Area
I n aortic stenosis, the aortic valve area (AVA) is intuitively the most appealing measure of severity because it is supposed to be (largely) independent of stroke volume and left ventricular pump function and reflects most closely “stenosis.” Calculation of the AVA by the continuity equation is routinely performed in echocardiography (1), using 3 measurements: the velocity-time integral of the...
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ژورنال
عنوان ژورنال: Heart
سال: 2013
ISSN: 1355-6037,1468-201X
DOI: 10.1136/heartjnl-2013-304443