Mitral regurgitation is a phenomenon in which blood flow is regurgitated due to mitral valve insufficiency. The pathology of mitral valve insufficiency is due to increased left atrial load and left ventricular diastolic load caused by mitral regurgitation, which results in a series of hemodynamic changes. When the left ventricle contracts, blood flow is injected from the left ventricle into the aorta and a portion of the blood regurgitates into the left atrium, so there is an enlargement of the left atrium and left ventricle and there is an increase in pulmonary venous and pulmonary capillary pressure resulting in pulmonary stasis, as well as dilatation by the blood vessels, especially to note that acute mitral valve insufficiency produces a sudden increase in left atrial pressure, which makes the left atrium In particular, acute mitral valve insufficiency produces a sudden increase in left atrial pressure, a sharp rise in left atrial and pulmonary capillary pressure, and acute pulmonary edema, with an apical murmur typical of mitral valve insufficiency, and a murmur in systole, as well as enlargement of the left atrium and left ventricle. The diagnosis can be made very clearly by echocardiography, and if the patient is identified as having mitral valve insufficiency, the cause should be promptly identified and treated symptomatically and causally. In addition, the patient should be emotionally stable and in a relaxed mood.