Systolic anterior motion (SAM) of the mitral valve in HCMP.

Systolic anterior motion (SAM) of the mitral valve is described as a condition where the mitral valve leaflet is displaced anteriorly, during systole, to the left ventricular outflow tract (LVOT).
Hypertrophic cardiomyopathy (HCM) is a condition affecting the left ventricle, the main pumping chamber of the heart. The walls of the left ventricle become thick and stiff. Over time, the heart can't take in or pump out enough blood during each heartbeat to supply the body's needs.