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. A person’s ...

Left atrial appendage occlusion is a generally safe and effective procedure to lower the risk of stroke in people with atrial fibrillation. It closes or blocks off the left atrial appendage of the ...

BOSTON, MA—Patients with heart failure and mildly reduced or preserved ejection fraction (HFmrEF/HFpEF) and elevated left atrial pressures appear to derive lasting benefits from a shunt that diverts ...