Two dimensional echocardiogram of mitral stenosis

The precordial long axis during diastole from a two dimensional echocardiogram of a patient with mitral stenosis shows a very small, flow limiting orifice that is maximally opened (arrow). The flexible portion of the valve leaflet domes (assumes a knee bend appearance) under the continually elevated left atrial (LA) pressure and lowered left ventricular (LV) diastolic pressure. The LA and right ventricle (RV) are large and the LV small.