The maximum instantaneous pressure gradient is not measured during cardiac catherization. As was noted, blood flow velocity in the LVOT (V 1) should not be ignored when it exceeds 1.0 m/s.

At the two higher doses, patients showed an average reduction in left ventricular outflow tract pressure gradient. High LVOT signals the heart is working hard to pump blood and is a predictor of ...

In principle, the blood volume passing through a stenotic valve (aortic stenosis) is equal to the blood volume proximal to the stenosis or in the LVOT (Figure ... stenosis.Pk Grad=peak gradient ...