The valve between the lower left heart chamber and the body's main artery (aorta) is narrowed and doesn't open fully. This reduces or blocks blood flow from the heart to the aorta and to the rest of the body. Treatment of aortic stenosis depends on the severity of the condition.

Pulmonary valve stenosis is the narrowing of the valve that separates the heart’s right ventricle from the pulmonary artery. As a result, the heart has to work harder to pump blood. It’s nearly always a congenital condition, meaning that babies are born with it, and we don’t exactly know why it occurs. Many people are born with a mild.

What is renal artery stenosis? Renal artery stenosis (RAS), or renal artery disease, is a narrowing of the arteries that carry blood from your heart to your kidneys. You have two renal arteries that supply blood to your right and left kidneys. One or both of these arteries can develop stenosis.

Mitral stenosis (MS) is a progressive condition characterized by obstruction of blood flow across the mitral valve from the left atrium to the left ventricle. The mechanical obstruction leads to increases in pressure within the left atrium, pulmonary vasculature, and right side of the heart.