Tricuspid stenosis

Tricuspid stenosis is more common in women and is mostly caused by rheumatic fever, but rheumatic tricuspid stenosis alone is extremely rare, with almost all associated with mitral and / or aortic valve disease. The cuspid valve is not fully closed. The pathological changes were thickened fibrosis of the valve, growth of vegetation on the edges, and the three valves adhered or fused to each other to form a triangular narrow valve hole. Lesions can also extend to the chordae and papillary muscles. After the stenosis is formed, the blood flow from the right atrium into the right ventricle is obstructed, so the right atrium is enlarged and the pressure is increased. Due to the obstruction of vena cava return, the venous pressure increased for a long time, showing signs of jugular vein bloating, hepatomegaly, ascites and edema of the limbs. The right ventricle shrinks due to reduced blood flow. With mitral valve disease, the right ventricle can be hypertrophic.

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