The mitral valve allows blood to flow from the left atrium of the heart into the left ventricle. Mitral regurgitation occurs when the mitral valve leaks blood back into the left atrium.

In rheumatic heart disease, an autoimmune attack on the mitral valve produces thickening of the valve leaflets. The mitral valve is often described as having a "fish-mouth" appearance. Whether the ...

Inspection of the jugular venous pulsations may reveal a prominent A wave due to vigorous atrial contraction of a prominent V wave due to tricuspid regurgitation that develops from pulmonary ...