Assertion: left atrium | /r/HasProperty | regurgitation
Facets:
Source sentences:
text: In mitral valve regurgitation, the valve between the upper left heart chamber (left atrium) and the lower left heart chamber (left ventricle) doesn't close tightly, causing blood to leak backward into the left atrium (regurgitation).
text: It may not be closing properly, which causes blood to leak backward to the left atrium (regurgitation), or the valve may be narrowed (stenosis).