Despite its declining frequency, rheumatic heart disease is still the most common cause of mitral valve stenosis. Scarring from rheumatic endocarditis causes fusion of the commissures and matting of the chordae tendineae, which interfere with valve closure. Calcification over time makes the valve less mobile. Progressive stenosis may lead to pulmonary hypertension, which may signal the need for surgery. The majority of patients eventually develop atrial fibrillation because of progressive dilation of the atria. Pulmonary hypertension may lead to pulmonary and tricuspid valve incompetence.

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Blood Pressure Health

Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

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