Overview of Mitral Regurgitation Etiology Can be caused by rheumatic fever (usually associated with mitral stenosis), dilated cardiomyopathy, LV dilation from chronic ischemic heart disease, papillary muscle dysfunction or chordae tendineae rupture. Etiology is a major determinant of outcome in cardiac surgical patients. Medical and Surgical Treatment Medical treatment may include digoxin, diuretics, and/or vasodilators—including […]