Mitral Regurgitation: Etiology

Etiology: Primary (1&2 because its valvular) vs. Secondary (3. because its functional) 1- Acute - trauma, IE, AMI (chordal/papillary rupture), Acute Rheumatic Fever, Spontaneous chordal rupture, degeneration of valves 2- Chronic Organic changes of leaflets, rings, chords, papillary muscles 3- Chronic Functional (LV & Mitral annulus dilatation) - Dilated/ Ischemic/ Hypertensive Cardiomyopathy