[6] Originally this division was made by echocardiography. In patients with an aortic valve area index (AVAi) beneath 0.6cm 2, flow was measured by indexed stroke volume (SVI). Gradients were ...

Left ventricular outflow tract (LVOT) diameter may be measured for valve area calculation ... with a dimensionless index of: V1/V2 ≠ 0.80/4.57 0.18 indicative of severe aortic stenosis.Pk ...

The investigator-initiated, international, randomized controlled trial enrolled patients with NYHA class II-IV HFrEF (LV ejection fraction ≥20% and <50%) and moderate AS (aortic valve area >1.0 ...