**3.2 Echocardiographic signs of aortic insufficiency**

The study of the size of the chambers of the heart, the mass of the myocardium of the left ventricle (**Figure 4**) [14].

The study of contractility of the left ventricle. The study of the volume, shape of the myocardium of the left ventricle.

Doppler echocardiography.

Pulse wave doppler.

Assessment of the degree of aortic regurgitation by the depth of the jet in the outflow tract of the left ventricle.

Continuous wave doppler also allows assessing the degree and significance of aortic regurgitation.

**Figure 4.** *Aortic insufficiency.*

Ways to reliably assess the severity of aortic regurgitation: Calculation of the half-decay time of the aortic pressure gradient regurgitation. Calculation of the fraction of the regurgitant volume.
