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Figure 3 Exaggerated LV Twist Mechanics in Aortic Stenosis

Peak counterclockwise rotation from apex (A) and clockwise rotation from base (B) are obtained by speckle track imaging (2D strain, GE Healthcare) of LV short-axis views of the patient shown in Figure 2. The difference of the 2 rotational values provides the peak net twist angle. This example illustrates presence of exaggerated LV rotation, particularly near the LV base with relatively high net LV twist angle value. AVC = aortic valve closure; LV = left ventricle.