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Low-flow, Low-gradient Severe Aortic Stenosis

Paradoxical LF-LG AS is defined as

Paradoxical LF-LG AS
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Paradoxical LFLG AS is defined as having an AVA of ≤1 cm2 (or indexed AVA <0.6 cm2/m2), mean gradient of <40 mmHg, stroke volume index (SVI) of 50%.

Low Flow Low Gradiant AS

Low Flow Low Gradiant AS is defined as
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Stroke volume indexed to body surface area <35 mL/m2 and/or a cardiac index <3 l/min/m2 and low gradient by a MG <40 mmHg

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